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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><title>FreeBSD 11.4-RELEASE Errata</title><link rel="stylesheet" type="text/css" href="docbook.css" /><link rev="made" href="mailto:doc@FreeBSD.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><meta name="description" content="This document lists errata items for FreeBSD 11.4-RELEASE, containing significant information discovered after the release or too late in the release cycle to be otherwise included in the release documentation. This information includes security advisories, as well as news relating to the software or documentation that could affect its operation or usability. An up-to-date version of this document should always be consulted before installing this version of FreeBSD. This errata document for FreeBSD 11.4-RELEASE will be maintained until FreeBSD 11.4-RELEASE reaches end-of-life." /><script xmlns="" type="text/javascript" src="/layout/js/google.js"></script></head><body><div class="article"><div xmlns="" class="titlepage"><div><div><h1 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="top"></a>FreeBSD 11.4-RELEASE Errata</h1></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="author"><h3 class="author"><span class="orgname">The FreeBSD Project</span></h3></div></div><div><p xmlns="http://www.w3.org/1999/xhtml" class="copyright">Copyright © 2020 The FreeBSD Documentation
Project</p></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="legalnotice"><a id="trademarks"></a><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD is a registered trademark of
the FreeBSD Foundation. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Intel, Celeron, Centrino, Core, EtherExpress, i386,
i486, Itanium, Pentium, and Xeon are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United
States and other countries. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">SPARC, SPARC64, and
UltraSPARC are trademarks of SPARC International, Inc in the United
States and other countries. SPARC International, Inc owns all of the
SPARC trademarks and under licensing agreements allows the proper use
of these trademarks by its members. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Many of the designations used by
manufacturers and sellers to distinguish their products are claimed
as trademarks. Where those designations appear in this document,
and the FreeBSD Project was aware of the trademark claim, the
designations have been followed by the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">&#8482;</span>&#8221;</span> or the
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">®</span>&#8221;</span> symbol. </p></div></div><div>Last modified on 2020-05-11 15:11:08 EDT by gjb.</div><div><div xmlns="http://www.w3.org/1999/xhtml" class="abstract"><div class="abstract-title">Abstract</div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This document lists errata items for FreeBSD 11.4-RELEASE,
containing significant information discovered after the
release or too late in the release cycle to be otherwise
included in the release documentation. This information
includes security advisories, as well as news relating to the
software or documentation that could affect its operation or
usability. An up-to-date version of this document should
always be consulted before installing this version of
FreeBSD. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This errata document for FreeBSD 11.4-RELEASE will be maintained
until FreeBSD 11.4-RELEASE reaches end-of-life. </p></div></div></div><hr /></div><div class="toc"><div class="toc-title">Table of Contents</div><dl class="toc"><dt><span class="sect1"><a href="#intro">1. Introduction</a></span></dt><dt><span class="sect1"><a href="#security">2. Security Advisories</a></span></dt><dt><span class="sect1"><a href="#errata">3. Errata Notices</a></span></dt><dt><span class="sect1"><a href="#open-issues">4. Open Issues</a></span></dt><dt><span class="sect1"><a href="#late-news">5. Late-Breaking News</a></span></dt></dl></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="intro"></a>1. Introduction</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This errata document contains <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">late-breaking
news</span>&#8221;</span> about FreeBSD 11.4-RELEASE. Before installing this
version, it is important to consult this document to learn about
any post-release discoveries or problems that may already have
been found and fixed. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Any version of this errata document actually distributed
with the release (for example, on a CDROM distribution) will be
out of date by definition, but other copies are kept updated on
the Internet and should be consulted as the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">current
errata</span>&#8221;</span> for this release. These other copies of the
errata are located at <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="https://www.FreeBSD.org/releases/" target="_top">https://www.FreeBSD.org/releases/</a>, plus any
sites which keep up-to-date mirrors of this location. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Source and binary snapshots of FreeBSD 11.4-STABLE also
contain up-to-date copies of this document (as of the time of
the snapshot). </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">For a list of all FreeBSD CERT security advisories, see <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="https://www.FreeBSD.org/security/" target="_top">https://www.FreeBSD.org/security/</a>. </p></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="security"></a>2. Security Advisories</h2></div></div></div><div class="informaltable"><table width="100%" border="0"><colgroup><col width="40%" /><col width="30%" /><col width="30%" /></colgroup><thead><tr><th>Advisory</th><th>Date</th><th>Topic</th></tr></thead><tbody><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:12.telnet.asc" target="_top">FreeBSD-SA-19:12.telnet</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Multiple vulnerabilities </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:13.pts.asc" target="_top">FreeBSD-SA-19:13.pts</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Write-after-free vulnerability </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:14.freebsd32.asc" target="_top">FreeBSD-SA-19:14.freebsd32</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel memory disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:15.mqueuefs.asc" target="_top">FreeBSD-SA-19:15.mqueuefs</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Reference count overflow </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:16.bhyve.asc" target="_top">FreeBSD-SA-19:16.bhyve</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=xhci&amp;sektion=4&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">xhci</span>(4)</span></a> out-of-bounds read </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:17.fd.asc" target="_top">FreeBSD-SA-19:17.fd</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Reference count leak </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:18.bzip2.asc" target="_top">FreeBSD-SA-19:18.bzip2</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Multiple vulnerabilities </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:19.mldv2.asc" target="_top">FreeBSD-SA-19:19.mldv2</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Out-of-bounds memory access </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:20.bsnmp.asc" target="_top">FreeBSD-SA-19:20.bsnmp</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Insufficient message length
validation </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:21.bhyve.asc" target="_top">FreeBSD-SA-19:21.bhyve</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Insufficient validation of guest-supplied
data </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:22.mbuf.asc" target="_top">FreeBSD-SA-19:22.mbuf</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">IPv6 remove denial-of-service </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:23.midi.asc" target="_top">FreeBSD-SA-19:23.midi</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel memory disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:24.mqueuefs.asc" target="_top">FreeBSD-SA-19:24.mqueuefs</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Reference count overflow </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:25.mcepsc.asc" target="_top">FreeBSD-SA-19:25.mcepce</a></td><td>12 November 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Machine Check Exception on Page Size
Change </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:26.mcu.asc" target="_top">FreeBSD-SA-19:26.mcu</a></td><td>12 November 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Intel CPU Microcode Update </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:01.libfetch.asc" target="_top">FreeBSD-SA-20:01.libfetch</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=fetch&amp;sektion=3&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">fetch</span>(3)</span></a> buffer overflow </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:03.thrmisc.asc" target="_top">FreeBSD-SA-20:03.thrmisc</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel stack data disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:04.tcp.asc" target="_top">FreeBSD-SA-20:04.tcp</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">TCP IPv6 SYN cache kernel information
disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:05.if_oce_ioctl.asc" target="_top">FreeBSD-SA-20:05.if_oce_ioctl</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Insufficient <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=ioctl&amp;sektion=2&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">ioctl</span>(2)</span></a> privilege
checking </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:07.epair.asc" target="_top">FreeBSD-SA-20:07.epair</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Incorrect user-controlled pointer
use </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:08.jail.asc" target="_top">FreeBSD-SA-20:08.jail</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel memory disclosure with nested
jails </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:09.ntp.asc" target="_top">FreeBSD-SA-20:09.ntp</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Multiple denial of service </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:10.ipfw.asc" target="_top">FreeBSD-SA-20:10.ipfw</a></td><td>21 April 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Invalid <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=mbuf&amp;sektion=9&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">mbuf</span>(9)</span></a> handling </p></td></tr></tbody></table></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="errata"></a>3. Errata Notices</h2></div></div></div><div class="informaltable"><table width="100%" border="0"><colgroup><col width="40%" /><col width="30%" /><col width="30%" /></colgroup><thead><tr><th>Errata</th><th>Date</th><th>Topic</th></tr></thead><tbody><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:13.mds.asc" target="_top">FreeBSD-EN-19:13.mds</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">System crash from Intel CPU vulnerability
mitigation </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:15.libunwind.asc" target="_top">FreeBSD-EN-19:15.libunwind</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Incorrect exception handling </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:16.bhyve.asc" target="_top">FreeBSD-EN-19:16.bhyve</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Instruction emulation improvements </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:17.ipfw.asc" target="_top">FreeBSD-EN-19:17.ipfw</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">"jail" keyword fix </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:18.tzdata.asc" target="_top">FreeBSD-EN-19:18.tzdata</a></td><td>23 October 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Timezone database information
update </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:01.ssp.asc" target="_top">FreeBSD-EN-20:01.ssp</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Imprecise orderring of canary
initialization </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:02.nmount.asc" target="_top">FreeBSD-EN-20:02.nmount</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Invalid pointer dereference </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:04.pfctl.asc" target="_top">FreeBSD-EN-20:04.pfctl</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Missing <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=pfctl&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">pfctl</span>(8)</span></a> tunable </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:06.ipv6.asc" target="_top">FreeBSD-EN-20:06.ipv6</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Incorrect checksum calculations </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:07.quotad.asc" target="_top">FreeBSD-EN-20:07.quotad</a></td><td>21 April 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Regression with certain <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">NFS</acronym>
servers </p></td></tr></tbody></table></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="open-issues"></a>4. Open Issues</h2></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional">No open issues. </p></li></ul></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="late-news"></a>5. Late-Breaking News</h2></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional">No late-breaking news. </p></li></ul></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>This file, and other release-related documents,
can be downloaded from <a href="https://www.FreeBSD.org/snapshots/">https://www.FreeBSD.org/snapshots/</a>.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about FreeBSD, read the
<a href="http://www.FreeBSD.org/docs.html">documentation</a> before
contacting &lt;<a href="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>&gt;.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>All users of FreeBSD 11.4-STABLE should
subscribe to the &lt;<a href="mailto:stable@FreeBSD.org">stable@FreeBSD.org</a>&gt;
mailing list.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about this documentation,
e-mail &lt;<a href="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>&gt;.</small></p></body></html>

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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><title>FreeBSD 11.4-RELEASE README</title><link rel="stylesheet" type="text/css" href="docbook.css" /><link rev="made" href="mailto:doc@FreeBSD.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><meta name="description" content="This document gives a brief introduction to FreeBSD 11.4-RELEASE. It includes some information on how to obtain FreeBSD, a listing of various ways to contact the FreeBSD Project, and pointers to some other sources of information." /><script xmlns="" type="text/javascript" src="/layout/js/google.js"></script></head><body><div class="article"><div xmlns="" class="titlepage"><div><div><h1 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="top"></a>FreeBSD 11.4-RELEASE README</h1></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="author"><h3 class="author"><span class="orgname">The FreeBSD Project</span></h3></div></div><div><p xmlns="http://www.w3.org/1999/xhtml" class="copyright">Copyright © 2000-2020 The FreeBSD Documentation
Project</p></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="legalnotice"><a id="trademarks"></a><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD is a registered trademark of
the FreeBSD Foundation. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Intel, Celeron, Centrino, Core, EtherExpress, i386,
i486, Itanium, Pentium, and Xeon are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United
States and other countries. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Motif, OSF/1, and UNIX are
registered trademarks and IT DialTone and The Open Group are
trademarks of The Open Group in the United States and other
countries. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">SPARC, SPARC64, and
UltraSPARC are trademarks of SPARC International, Inc in the United
States and other countries. SPARC International, Inc owns all of the
SPARC trademarks and under licensing agreements allows the proper use
of these trademarks by its members. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Many of the designations used by
manufacturers and sellers to distinguish their products are claimed
as trademarks. Where those designations appear in this document,
and the FreeBSD Project was aware of the trademark claim, the
designations have been followed by the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">&#8482;</span>&#8221;</span> or the
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">®</span>&#8221;</span> symbol. </p></div></div><div>Last modified on 2020-05-11 15:11:08 EDT by gjb.</div><div><div xmlns="http://www.w3.org/1999/xhtml" class="abstract"><div class="abstract-title">Abstract</div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This document gives a brief introduction to FreeBSD
11.4-RELEASE. It includes some information on how to
obtain FreeBSD, a listing of various ways to contact the FreeBSD
Project, and pointers to some other sources of
information. </p></div></div></div><hr /></div><div class="toc"><div class="toc-title">Table of Contents</div><dl class="toc"><dt><span class="sect1"><a href="#intro">1. Introduction</a></span></dt><dd><dl><dt><span class="sect2"><a href="#intro-about">1.1. About FreeBSD</a></span></dt><dt><span class="sect2"><a href="#intro-audience">1.2. Target Audience</a></span></dt></dl></dd><dt><span class="sect1"><a href="#obtain">2. Obtaining FreeBSD</a></span></dt><dd><dl><dt><span class="sect2"><a href="#obtain-cd-dvd">2.1. CDROM and DVD</a></span></dt><dt><span class="sect2"><a href="#obtain-https">2.2. HTTPS</a></span></dt><dt><span class="sect2"><a href="#obtain-ftp">2.3. FTP</a></span></dt></dl></dd><dt><span class="sect1"><a href="#contacting">3. Contacting the FreeBSD Project</a></span></dt><dd><dl><dt><span class="sect2"><a href="#contacting-email">3.1. Email and Mailing Lists</a></span></dt><dt><span class="sect2"><a href="#contacting-problem-reports">3.2. Submitting Problem Reports</a></span></dt></dl></dd><dt><span class="sect1"><a href="#seealso">4. Further Reading</a></span></dt><dd><dl><dt><span class="sect2"><a href="#release-docs">4.1. Release Documentation</a></span></dt><dt><span class="sect2"><a href="#manual-pages">4.2. Manual Pages</a></span></dt><dt><span class="sect2"><a href="#books-articles">4.3. Books and Articles</a></span></dt></dl></dd><dt><span class="sect1"><a href="#acknowledgements">5. Acknowledgments</a></span></dt></dl></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="intro"></a>1. Introduction</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This distribution is a release of FreeBSD
11.4-RELEASE, the latest point along the 11.4-STABLE
branch. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="intro-about"></a>1.1. About FreeBSD</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD is an operating system based on 4.4 BSD Lite for
AMD64 and Intel EM64T based PC hardware (amd64),
Intel, AMD, Cyrix or NexGen <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">x86</span>&#8221;</span> based PC
hardware (i386), NEC PC-9801/9821 series PCs and
compatibles (pc98), and <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">UltraSPARC</span>® machines
(sparc64). Versions for the <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">ARM</span>® (arm), <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">MIPS</span>®
(mips), and <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">PowerPC</span>® (powerpc) architectures
are currently under development as well. FreeBSD works with
a wide variety of peripherals and configurations and can be
used for everything from software development to games to
Internet Service Provision. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This release of FreeBSD contains everything you need to run
such a system, including full source code for the kernel and
all utilities in the base distribution. With the source
distribution installed, you can literally recompile the entire
system from scratch with one command, making it ideal for
students, researchers, or users who simply want to see how it
all works. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A large collection of third-party ported software (the
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">Ports Collection</span>&#8221;</span>) is also provided to make it
easy to obtain and install all your favorite traditional
<span xmlns="http://www.w3.org/1999/xhtml" class="trademark">UNIX</span>® utilities for FreeBSD. Each <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">port</span>&#8221;</span> consists
of a set of scripts to retrieve, configure, build, and install
a piece of software, with a single command. Over
24,000 ports, from editors to programming languages to
graphical applications, make FreeBSD a powerful and comprehensive
operating environment that extends far beyond what's provided
by many commercial versions of <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">UNIX</span>®. Most ports are also
available as pre-compiled <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">packages</span>&#8221;</span>, which can
be quickly installed from the installation program. </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="intro-audience"></a>1.2. Target Audience</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This release of FreeBSD is
suitable for all users. It has undergone a period of testing
and quality assurance checking to ensure the highest
reliability and dependability. </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="obtain"></a>2. Obtaining FreeBSD</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD may be obtained in a variety of ways. This section
focuses on those ways that are primarily useful for obtaining a
complete FreeBSD distribution, rather than updating an existing
installation. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="obtain-cd-dvd"></a>2.1. CDROM and DVD</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD -RELEASE distributions may be ordered on CDROM or DVD
from several publishers. This is frequently the most
convenient way to obtain FreeBSD for new installations, as it
provides a convenient way to quickly reinstall the system if
necessary. Some distributions include some of the optional,
precompiled <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">packages</span>&#8221;</span> from the FreeBSD Ports
Collection, or other extra material. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A list of the CDROM and DVD publishers known to the
project are listed in the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/handbook/mirrors.html" target="_top"><span class="quote">&#8220;<span class="quote">Obtaining
FreeBSD</span>&#8221;</span></a> appendix to the Handbook. </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="obtain-https"></a>2.2. HTTPS</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD releases may be downloaded via
<acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">HTTPS</acronym> from <code xmlns="http://www.w3.org/1999/xhtml" class="uri"><a class="uri" href="https://download.FreeBSD.org/" target="_top">https://download.FreeBSD.org/</a></code>,
which is the official FreeBSD release site. </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="obtain-ftp"></a>2.3. FTP</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">You can use FTP to retrieve FreeBSD and any or all of its
optional packages from <code xmlns="http://www.w3.org/1999/xhtml" class="uri"><a class="uri" href="ftp://ftp.FreeBSD.org/" target="_top">ftp://ftp.FreeBSD.org/</a></code>,
or any of its <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">mirrors</span>&#8221;</span>. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Lists of locations that mirror FreeBSD can be found in the
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/handbook/mirrors-ftp.html" target="_top">FTP
Sites</a> section of the Handbook.
Finding a close (in networking terms) mirror from which to
download the distribution is highly recommended. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Additional mirror sites are always welcome. Contact
<code xmlns="http://www.w3.org/1999/xhtml" class="email">&lt;<a xmlns="" class="email" href="mailto:freebsd-admin@FreeBSD.org">freebsd-admin@FreeBSD.org</a>&gt;</code> for more details on
becoming an official mirror site. You can also find useful
information for mirror sites at the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/articles/hubs/" target="_top">Mirroring FreeBSD</a>
article. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Mirrors generally contain the ISO images generally used to
create a CDROM of a FreeBSD release. They usually also contain
floppy disk images (for applicable platforms), as well as the
files necessary to do an installation over the network.
Finally mirrors sites usually contain a set of packages for
the most current release. </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="contacting"></a>3. Contacting the FreeBSD Project</h2></div></div></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="contacting-email"></a>3.1. Email and Mailing Lists</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">For any questions or general technical support issues,
please send mail to the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="http://lists.FreeBSD.org/mailman/listinfo/freebsd-questions" target="_top">FreeBSD general questions mailing list</a>. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">If you are tracking the 11.4-STABLE development
efforts, you <span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>must</em></span> join the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="http://lists.FreeBSD.org/mailman/listinfo/freebsd-stable" target="_top">FreeBSD-STABLE mailing list</a>,
in order to keep abreast of recent developments and changes
that may affect the way you use and maintain the
system. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Being a largely-volunteer effort, the FreeBSD Project is
always happy to have extra hands willing to help&#8212;there
are already far more desired enhancements than there is time
to implement them. To contact the developers on technical
matters, or with offers of help, please send mail to the
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="http://lists.FreeBSD.org/mailman/listinfo/freebsd-hackers" target="_top">FreeBSD technical discussions mailing list</a>. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Please note that these mailing lists can experience
<span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>significant</em></span> amounts of traffic. If you
have slow or expensive mail access, or are only interested in
keeping up with major FreeBSD events, you may find it
preferable to subscribe instead to the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="http://lists.FreeBSD.org/mailman/listinfo/freebsd-announce" target="_top">FreeBSD announcements mailing list</a>. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">All of the mailing lists can be freely joined by anyone
wishing to do so. Visit the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../mailman/listinfo" target="_top">FreeBSD Mailman Info
Page</a>. This will give you more information on joining
the various lists, accessing archives, etc. There are
a number of mailing lists targeted at special interest groups
not mentioned here; more information can be obtained either
from the Mailman pages or the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../support.html#mailing-list" target="_top">mailing
lists section</a> of the FreeBSD Web site. </p><div xmlns="" class="important"><h3 class="admontitle">Important: </h3><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Do <span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>not</em></span> send email to the lists
asking to be subscribed. Use the Mailman interface
instead. </p></div></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="contacting-problem-reports"></a>3.2. Submitting Problem Reports</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Suggestions, bug reports and contributions of code are
always valued&#8212;please do not hesitate to report any
problems you may find. Bug reports with attached fixes are of
course even more welcome. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">The preferred method to submit bug reports from a machine
with Internet connectivity is to use the
<span xmlns="http://www.w3.org/1999/xhtml" class="application">Bugzilla</span> bug tracker.
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">Problem Reports</span>&#8221;</span> (PRs) submitted in this way
will be filed and their progress tracked; the FreeBSD developers
will do their best to respond to all reported bugs as soon as
possible. <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="https://bugs.FreeBSD.org/search/" target="_top">A list of all
active PRs</a> is available on the FreeBSD Web site; this
list is useful to see what potential problems other users have
encountered. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Note that <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=send-pr&amp;sektion=1&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">send-pr</span>(1)</span></a> is deprecated. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">For more information, <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/articles/problem-reports/" target="_top"><span class="quote">&#8220;<span class="quote">Writing
FreeBSD Problem Reports</span>&#8221;</span></a>, available on the FreeBSD
Web site, has a number of helpful hints on writing and
submitting effective problem reports. </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="seealso"></a>4. Further Reading</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">There are many sources of information about FreeBSD; some are
included with this distribution, while others are available
on-line or in print versions. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="release-docs"></a>4.1. Release Documentation</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A number of other files provide more specific information
about this release distribution. These files are
provided in various formats. Most distributions will include
both ASCII text (<code xmlns="http://www.w3.org/1999/xhtml" class="filename">.TXT</code>) and HTML
(<code xmlns="http://www.w3.org/1999/xhtml" class="filename">.HTM</code>) renditions. Some distributions
may also include other formats such as Portable Document
Format (<code xmlns="http://www.w3.org/1999/xhtml" class="filename">.PDF</code>). </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><code xmlns="http://www.w3.org/1999/xhtml" class="filename">README.TXT</code>: This file, which
gives some general information about FreeBSD as well as
some cursory notes about obtaining a
distribution. </p></li><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><code xmlns="http://www.w3.org/1999/xhtml" class="filename">RELNOTES.TXT</code>: The release
notes, showing what's new and different in FreeBSD
11.4-RELEASE compared to the previous release (FreeBSD
11.3-RELEASE). </p></li><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><code xmlns="http://www.w3.org/1999/xhtml" class="filename">HARDWARE.TXT</code>: The hardware
compatibility list, showing devices with which FreeBSD has
been tested and is known to work. </p></li><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><code xmlns="http://www.w3.org/1999/xhtml" class="filename">ERRATA.TXT</code>: Release errata.
Late-breaking, post-release information can be found in
this file, which is principally applicable to releases
(as opposed to snapshots). It is important to consult
this file before installing a release of FreeBSD, as it
contains the latest information on problems which have
been found and fixed since the release was
created. </p></li></ul></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">On platforms that support <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=bsdinstall&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">bsdinstall</span>(8)</span></a> (currently
amd64, i386, pc98, and sparc64),
these documents are generally available via the Documentation
menu during installation. Once the system is installed, you
can revisit this menu by re-running the <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=bsdinstall&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">bsdinstall</span>(8)</span></a>
utility. </p><div xmlns="" class="note"><h3 class="admontitle">Note: </h3><p xmlns="http://www.w3.org/TR/xhtml1/transitional">It is extremely important to read the errata for any
given release before installing it, to learn about any
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">late-breaking news</span>&#8221;</span> or post-release problems.
The errata file accompanying each release (most likely right
next to this file) is already out of date by definition, but
other copies are kept updated on the Internet and should be
consulted as the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">current errata</span>&#8221;</span> for this
release. These other copies of the errata are located at
<code xmlns="http://www.w3.org/1999/xhtml" class="uri"><a class="uri" href="../../../../releases/" target="_top">../../../../releases/</a></code>
(as well as any sites which keep up-to-date mirrors of this
location). </p></div></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="manual-pages"></a>4.2. Manual Pages</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">As with almost all <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">UNIX</span>® like operating systems, FreeBSD
comes with a set of on-line manual pages, accessed through the
<a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=man&amp;sektion=1&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">man</span>(1)</span></a> command or through the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="http://www.FreeBSD.org/cgi/man.cgi" target="_top">hypertext
manual pages gateway</a> on the FreeBSD Web site. In
general, the manual pages provide information on the different
commands and APIs available to the FreeBSD user. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">In some cases, manual pages are written to give
information on particular topics. Notable examples of such
manual pages are <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=tuning&amp;sektion=7&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">tuning</span>(7)</span></a> (a guide to performance
tuning), <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=security&amp;sektion=7&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">security</span>(7)</span></a> (an introduction to FreeBSD security),
and <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=style&amp;sektion=9&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">style</span>(9)</span></a> (a style guide to kernel coding). </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="books-articles"></a>4.3. Books and Articles</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Two highly-useful collections of FreeBSD-related information,
maintained by the FreeBSD Project,
are the FreeBSD Handbook and FreeBSD FAQ (Frequently Asked Questions
document). On-line versions of the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/handbook/" target="_top">Handbook</a> and <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/faq/" target="_top">FAQ</a> are always
available from the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../docs.html" target="_top">FreeBSD Documentation
page</a> or its mirrors. If you install the
<code xmlns="http://www.w3.org/1999/xhtml" class="filename">doc</code> distribution set, you can use a Web
browser to read the Handbook and FAQ locally. In particular,
note that the Handbook contains a step-by-step guide to
installing FreeBSD. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A number of on-line books and articles, also maintained by
the FreeBSD Project, cover more-specialized, FreeBSD-related topics.
This material spans a wide range of topics, from effective use
of the mailing lists, to dual-booting FreeBSD with other
operating systems, to guidelines for new committers. Like the
Handbook and FAQ, these documents are available from the FreeBSD
Documentation Page or in the <code xmlns="http://www.w3.org/1999/xhtml" class="filename">doc</code>
distribution set. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A listing of other books and documents about FreeBSD can be
found in the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/handbook/bibliography.html" target="_top">bibliography</a>
of the FreeBSD Handbook. Because of FreeBSD's strong <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">UNIX</span>®
heritage, many other articles and books written for <span xmlns="http://www.w3.org/1999/xhtml" class="trademark">UNIX</span>®
systems are applicable as well, some of which are also listed
in the bibliography. </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="acknowledgements"></a>5. Acknowledgments</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD represents the cumulative work of many hundreds, if not
thousands, of individuals from around the world who have worked
countless hours to bring about this release. For
a complete list of FreeBSD developers and contributors, please see
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/articles/contributors/" target="_top"><span class="quote">&#8220;<span class="quote">Contributors
to FreeBSD</span>&#8221;</span></a> on the FreeBSD Web site or any of its
mirrors. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Special thanks also go to the many thousands of FreeBSD users
and testers all over the world, without whom this release
simply would not have been possible. </p></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>This file, and other release-related documents,
can be downloaded from <a href="https://www.FreeBSD.org/snapshots/">https://www.FreeBSD.org/snapshots/</a>.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about FreeBSD, read the
<a href="http://www.FreeBSD.org/docs.html">documentation</a> before
contacting &lt;<a href="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>&gt;.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>All users of FreeBSD 11.4-STABLE should
subscribe to the &lt;<a href="mailto:stable@FreeBSD.org">stable@FreeBSD.org</a>&gt;
mailing list.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about this documentation,
e-mail &lt;<a href="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>&gt;.</small></p></body></html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><title>FreeBSD 11.4-RELEASE Release Notes</title><link rel="stylesheet" type="text/css" href="docbook.css" /><link rev="made" href="mailto:doc@FreeBSD.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><meta name="description" content="The release notes for FreeBSD 11.4-RELEASE contain a summary of the changes made to the FreeBSD base system on the 11.4-STABLE development line. This document lists applicable security advisories that were issued since the last release, as well as significant changes to the FreeBSD kernel and userland. Some brief remarks on upgrading are also presented." /><script xmlns="" type="text/javascript" src="/layout/js/google.js"></script></head><body><div class="article"><div xmlns="" class="titlepage"><div><div><h1 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="top"></a>FreeBSD 11.4-RELEASE Release Notes</h1></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="author"><h3 class="author"><span class="orgname">The FreeBSD Project</span></h3></div></div><div><p xmlns="http://www.w3.org/1999/xhtml" class="copyright">Copyright © 2020 The FreeBSD Documentation
Project</p></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="legalnotice"><a id="trademarks"></a><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD is a registered trademark of
the FreeBSD Foundation. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">IBM, AIX, OS/2,
PowerPC, PS/2, S/390, and ThinkPad are
trademarks of International Business Machines Corporation in the
United States, other countries, or both. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">IEEE, POSIX, and 802 are registered
trademarks of Institute of Electrical and Electronics Engineers,
Inc. in the United States. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Intel, Celeron, Centrino, Core, EtherExpress, i386,
i486, Itanium, Pentium, and Xeon are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United
States and other countries. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">SPARC, SPARC64, and
UltraSPARC are trademarks of SPARC International, Inc in the United
States and other countries. SPARC International, Inc owns all of the
SPARC trademarks and under licensing agreements allows the proper use
of these trademarks by its members. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Many of the designations used by
manufacturers and sellers to distinguish their products are claimed
as trademarks. Where those designations appear in this document,
and the FreeBSD Project was aware of the trademark claim, the
designations have been followed by the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">&#8482;</span>&#8221;</span> or the
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">®</span>&#8221;</span> symbol. </p></div></div><div>Last modified on 2020-05-11 15:11:08 EDT by gjb.</div><div><div xmlns="http://www.w3.org/1999/xhtml" class="abstract"><div class="abstract-title">Abstract</div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">The release notes for FreeBSD 11.4-RELEASE contain
a summary of the changes made to the FreeBSD base system on the
11.4-STABLE development line. This document lists
applicable security advisories that were issued since the last
release, as well as significant changes to the FreeBSD kernel and
userland. Some brief remarks on upgrading are also
presented. </p></div></div></div><hr /></div><div class="toc"><div class="toc-title">Table of Contents</div><dl class="toc"><dt><span class="sect1"><a href="#intro">1. Introduction</a></span></dt><dt><span class="sect1"><a href="#upgrade">2. Upgrading from Previous Releases of FreeBSD</a></span></dt><dt><span class="sect1"><a href="#security-errata">3. Security and Errata</a></span></dt><dd><dl><dt><span class="sect2"><a href="#security">3.1. Security Advisories</a></span></dt><dt><span class="sect2"><a href="#errata">3.2. Errata Notices</a></span></dt></dl></dd><dt><span class="sect1"><a href="#userland">4. Userland</a></span></dt><dd><dl><dt><span class="sect2"><a href="#userland-config">4.1. Userland Configuration Changes</a></span></dt><dt><span class="sect2"><a href="#userland-programs">4.2. Userland Application Changes</a></span></dt><dt><span class="sect2"><a href="#userland-contrib">4.3. Contributed Software</a></span></dt><dt><span class="sect2"><a href="#userland-installer">4.4. Installation and Configuration Tools</a></span></dt><dt><span class="sect2"><a href="#userland-rc">4.5. <code class="filename">/etc/rc.d</code>
Scripts</a></span></dt><dt><span class="sect2"><a href="#userland-periodic">4.6. <code class="filename">/etc/periodic</code>
Scripts</a></span></dt><dt><span class="sect2"><a href="#userland-libraries">4.7. Runtime Libraries and API</a></span></dt><dt><span class="sect2"><a href="#userland-abi">4.8. ABI Compatibility</a></span></dt><dt><span class="sect2"><a href="#userland-debug">4.9. Userland Debugging</a></span></dt></dl></dd><dt><span class="sect1"><a href="#kernel">5. Kernel</a></span></dt><dd><dl><dt><span class="sect2"><a href="#kernel-general">5.1. General Kernel Changes</a></span></dt><dt><span class="sect2"><a href="#kernel-bugfix">5.2. Kernel Bug Fixes</a></span></dt><dt><span class="sect2"><a href="#kernel-config">5.3. Kernel Configuration</a></span></dt><dt><span class="sect2"><a href="#kernel-modules">5.4. Kernel Modules</a></span></dt><dt><span class="sect2"><a href="#kernel-sysctl">5.5. System Tuning and Controls</a></span></dt></dl></dd><dt><span class="sect1"><a href="#drivers">6. Devices and Drivers</a></span></dt><dd><dl><dt><span class="sect2"><a href="#drivers-device">6.1. Device Drivers</a></span></dt><dt><span class="sect2"><a href="#drivers-storage">6.2. Storage Drivers</a></span></dt><dt><span class="sect2"><a href="#drivers-network">6.3. Network Drivers</a></span></dt></dl></dd><dt><span class="sect1"><a href="#hardware">7. Hardware Support</a></span></dt><dd><dl><dt><span class="sect2"><a href="#hardware-support">7.1. Hardware Support</a></span></dt><dt><span class="sect2"><a href="#hardware-virtualization">7.2. Virtualization Support</a></span></dt><dt><span class="sect2"><a href="#hardware-arm">7.3. ARM Support</a></span></dt></dl></dd><dt><span class="sect1"><a href="#storage">8. Storage</a></span></dt><dd><dl><dt><span class="sect2"><a href="#storage-general">8.1. General Storage</a></span></dt><dt><span class="sect2"><a href="#storage-net">8.2. Networked Storage</a></span></dt><dt><span class="sect2"><a href="#storage-zfs">8.3. ZFS</a></span></dt><dt><span class="sect2"><a href="#storage-geom">8.4. <code class="literal">geom(4)</code></a></span></dt></dl></dd><dt><span class="sect1"><a href="#boot">9. Boot Loader Changes</a></span></dt><dd><dl><dt><span class="sect2"><a href="#boot-loader">9.1. Boot Loader Changes</a></span></dt><dt><span class="sect2"><a href="#boot-menu">9.2. Boot Menu Changes</a></span></dt></dl></dd><dt><span class="sect1"><a href="#network">10. Networking</a></span></dt><dd><dl><dt><span class="sect2"><a href="#network-general">10.1. General Network Changes</a></span></dt><dt><span class="sect2"><a href="#network-protocols">10.2. Network Protocols</a></span></dt></dl></dd><dt><span class="sect1"><a href="#ports">11. Ports Collection and Package Infrastructure</a></span></dt><dd><dl><dt><span class="sect2"><a href="#ports-infrastructure">11.1. Infrastructure Changes</a></span></dt><dt><span class="sect2"><a href="#ports-packages">11.2. Packaging Changes</a></span></dt></dl></dd><dt><span class="sect1"><a href="#doc">12. Documentation</a></span></dt><dd><dl><dt><span class="sect2"><a href="#doc-sources">12.1. Documentation Source Changes</a></span></dt><dt><span class="sect2"><a href="#doc-toolchain">12.2. Documentation Toolchain Changes</a></span></dt></dl></dd><dt><span class="sect1"><a href="#releng">13. Release Engineering and Integration</a></span></dt><dd><dl><dt><span class="sect2"><a href="#releng-changes">13.1. Integration Changes</a></span></dt></dl></dd></dl></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="intro"></a>1. Introduction</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This document contains the release notes for FreeBSD
11.4-RELEASE. It describes recently added, changed, or
deleted features of FreeBSD. It also provides some notes on
upgrading from previous versions of FreeBSD. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This distribution of FreeBSD
11.4-RELEASE is a release distribution. It can be
found at <code xmlns="http://www.w3.org/1999/xhtml" class="uri"><a class="uri" href="https://www.FreeBSD.org/snapshots/" target="_top">https://www.FreeBSD.org/snapshots/</a></code> or
any of its mirrors. More information on obtaining this (or
other) release distributions of FreeBSD can be found in the
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/handbook/mirrors.html" target="_top"><span class="quote">&#8220;<span class="quote">Obtaining
FreeBSD</span>&#8221;</span> appendix</a> to the <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="../../../../doc/en_US.ISO8859-1/books/handbook/" target="_top">FreeBSD
Handbook</a>. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">All users are encouraged to consult the release errata
before installing FreeBSD. The errata document is updated with
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">late-breaking</span>&#8221;</span> information discovered late in the
release cycle or after the release. Typically, it contains
information on known bugs, security advisories, and corrections
to documentation. An up-to-date copy of the errata for FreeBSD
11.4-RELEASE can be found on the FreeBSD Web site. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This document describes the most user-visible new or changed
features in FreeBSD since 11.3-RELEASE. In general, changes
described here are unique to the 11.4-STABLE branch unless
specifically marked as MERGED features. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Typical release note items document recent security
advisories issued after 11.3-RELEASE, new drivers or hardware
support, new commands or options, major bug fixes, or
contributed software upgrades. They may also list changes to
major ports/packages or release engineering practices. Clearly
the release notes cannot list every single change made to FreeBSD
between releases; this document focuses primarily on security
advisories, user-visible changes, and major architectural
improvements. </p></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="upgrade"></a>2. Upgrading from Previous Releases of FreeBSD</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">[amd64,i386] Binary upgrades between RELEASE versions
(and snapshots of the various security branches) are supported
using the <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=freebsd-update&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">freebsd-update</span>(8)</span></a> utility. The binary upgrade
procedure will update unmodified userland utilities, as well as
unmodified GENERIC kernels distributed as a part of an official
FreeBSD release. The <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=freebsd-update&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">freebsd-update</span>(8)</span></a> utility requires that
the host being upgraded have Internet connectivity. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Source-based upgrades (those based on recompiling the FreeBSD
base system from source code) from previous versions are
supported, according to the instructions in
<code xmlns="http://www.w3.org/1999/xhtml" class="filename">/usr/src/UPDATING</code>. </p><div xmlns="" class="important"><h3 class="admontitle">Important: </h3><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Upgrading FreeBSD should only be attempted after backing up
<span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>all</em></span> data and configuration files. </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="security-errata"></a>3. Security and Errata</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section lists the various Security Advisories and
Errata Notices since 11.3-RELEASE. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="security"></a>3.1. Security Advisories</h3></div></div></div><div class="informaltable"><table width="100%" border="0"><colgroup><col width="40%" /><col width="30%" /><col width="30%" /></colgroup><thead><tr><th>Advisory</th><th>Date</th><th>Topic</th></tr></thead><tbody><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:12.telnet.asc" target="_top">FreeBSD-SA-19:12.telnet</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Multiple vulnerabilities </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:13.pts.asc" target="_top">FreeBSD-SA-19:13.pts</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Write-after-free vulnerability </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:14.freebsd32.asc" target="_top">FreeBSD-SA-19:14.freebsd32</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel memory disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:15.mqueuefs.asc" target="_top">FreeBSD-SA-19:15.mqueuefs</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Reference count overflow </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:16.bhyve.asc" target="_top">FreeBSD-SA-19:16.bhyve</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=xhci&amp;sektion=4&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">xhci</span>(4)</span></a> out-of-bounds read </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:17.fd.asc" target="_top">FreeBSD-SA-19:17.fd</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Reference count leak </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:18.bzip2.asc" target="_top">FreeBSD-SA-19:18.bzip2</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Multiple vulnerabilities </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:19.mldv2.asc" target="_top">FreeBSD-SA-19:19.mldv2</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Out-of-bounds memory access </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:20.bsnmp.asc" target="_top">FreeBSD-SA-19:20.bsnmp</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Insufficient message length
validation </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:21.bhyve.asc" target="_top">FreeBSD-SA-19:21.bhyve</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Insufficient validation of guest-supplied
data </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:22.mbuf.asc" target="_top">FreeBSD-SA-19:22.mbuf</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">IPv6 remove denial-of-service </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:23.midi.asc" target="_top">FreeBSD-SA-19:23.midi</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel memory disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:24.mqueuefs.asc" target="_top">FreeBSD-SA-19:24.mqueuefs</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Reference count overflow </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:25.mcepsc.asc" target="_top">FreeBSD-SA-19:25.mcepce</a></td><td>12 November 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Machine Check Exception on Page Size
Change </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-19:26.mcu.asc" target="_top">FreeBSD-SA-19:26.mcu</a></td><td>12 November 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Intel CPU Microcode Update </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:01.libfetch.asc" target="_top">FreeBSD-SA-20:01.libfetch</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional"><a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=fetch&amp;sektion=3&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">fetch</span>(3)</span></a> buffer overflow </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:03.thrmisc.asc" target="_top">FreeBSD-SA-20:03.thrmisc</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel stack data disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:04.tcp.asc" target="_top">FreeBSD-SA-20:04.tcp</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">TCP IPv6 SYN cache kernel information
disclosure </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:05.if_oce_ioctl.asc" target="_top">FreeBSD-SA-20:05.if_oce_ioctl</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Insufficient <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=ioctl&amp;sektion=2&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">ioctl</span>(2)</span></a> privilege
checking </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:07.epair.asc" target="_top">FreeBSD-SA-20:07.epair</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Incorrect user-controlled pointer
use </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:08.jail.asc" target="_top">FreeBSD-SA-20:08.jail</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Kernel memory disclosure with nested
jails </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:09.ntp.asc" target="_top">FreeBSD-SA-20:09.ntp</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Multiple denial of service </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-SA-20:10.ipfw.asc" target="_top">FreeBSD-SA-20:10.ipfw</a></td><td>21 April 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Invalid <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=mbuf&amp;sektion=9&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">mbuf</span>(9)</span></a> handling </p></td></tr></tbody></table></div></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="errata"></a>3.2. Errata Notices</h3></div></div></div><div class="informaltable"><table width="100%" border="0"><colgroup><col width="40%" /><col width="30%" /><col width="30%" /></colgroup><thead><tr><th>Errata</th><th>Date</th><th>Topic</th></tr></thead><tbody><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:13.mds.asc" target="_top">FreeBSD-EN-19:13.mds</a></td><td>24 July 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">System crash from Intel CPU vulnerability
mitigation </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:15.libunwind.asc" target="_top">FreeBSD-EN-19:15.libunwind</a></td><td>6 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Incorrect exception handling </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:16.bhyve.asc" target="_top">FreeBSD-EN-19:16.bhyve</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Instruction emulation improvements </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:17.ipfw.asc" target="_top">FreeBSD-EN-19:17.ipfw</a></td><td>20 August 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">"jail" keyword fix </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-19:18.tzdata.asc" target="_top">FreeBSD-EN-19:18.tzdata</a></td><td>23 October 2019</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Timezone database information
update </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:01.ssp.asc" target="_top">FreeBSD-EN-20:01.ssp</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Imprecise orderring of canary
initialization </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:02.nmount.asc" target="_top">FreeBSD-EN-20:02.nmount</a></td><td>28 January 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Invalid pointer dereference </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:04.pfctl.asc" target="_top">FreeBSD-EN-20:04.pfctl</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Missing <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="https://www.FreeBSD.org/cgi/man.cgi?query=pfctl&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">pfctl</span>(8)</span></a> tunable </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:06.ipv6.asc" target="_top">FreeBSD-EN-20:06.ipv6</a></td><td>18 March 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Incorrect checksum calculations </p></td></tr><tr><td><a class="link" href="https://www.FreeBSD.org/security/advisories/FreeBSD-EN-20:07.quotad.asc" target="_top">FreeBSD-EN-20:07.quotad</a></td><td>21 April 2020</td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Regression with certain <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">NFS</acronym>
servers </p></td></tr></tbody></table></div></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="userland"></a>4. Userland</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers changes and additions to userland
applications, contributed software, and system utilities. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-config"></a>4.1. Userland Configuration Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-programs"></a>4.2. Userland Application Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-contrib"></a>4.3. Contributed Software</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-installer"></a>4.4. Installation and Configuration Tools</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-rc"></a>4.5. <code class="filename">/etc/rc.d</code>
Scripts</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-periodic"></a>4.6. <code class="filename">/etc/periodic</code>
Scripts</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-libraries"></a>4.7. Runtime Libraries and API</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-abi"></a>4.8. ABI Compatibility</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="userland-debug"></a>4.9. Userland Debugging</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="kernel"></a>5. Kernel</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers changes to kernel configurations, system
tuning, and system control parameters that are not otherwise
categorized. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="kernel-general"></a>5.1. General Kernel Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="kernel-bugfix"></a>5.2. Kernel Bug Fixes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="kernel-config"></a>5.3. Kernel Configuration</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="kernel-modules"></a>5.4. Kernel Modules</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="kernel-sysctl"></a>5.5. System Tuning and Controls</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="drivers"></a>6. Devices and Drivers</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers changes and additions to devices and
device drivers since 11.3-RELEASE. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="drivers-device"></a>6.1. Device Drivers</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="drivers-storage"></a>6.2. Storage Drivers</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="drivers-network"></a>6.3. Network Drivers</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="hardware"></a>7. Hardware Support</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers general hardware support for physical
machines, hypervisors, and virtualization environments, as well
as hardware changes and updates that do not otherwise fit in
other sections of this document. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="hardware-support"></a>7.1. Hardware Support</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="hardware-virtualization"></a>7.2. Virtualization Support</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="hardware-arm"></a>7.3. ARM Support</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="storage"></a>8. Storage</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers changes and additions to file systems
and other storage subsystems, both local and networked. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="storage-general"></a>8.1. General Storage</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="storage-net"></a>8.2. Networked Storage</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="storage-zfs"></a>8.3. ZFS</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="storage-geom"></a>8.4. <code class="literal">geom(4)</code></h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="boot"></a>9. Boot Loader Changes</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers the boot loader, boot menu, and other
boot-related changes. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="boot-loader"></a>9.1. Boot Loader Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="boot-menu"></a>9.2. Boot Menu Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="network"></a>10. Networking</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section describes changes that affect networking in
FreeBSD. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="network-general"></a>10.1. General Network Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="network-protocols"></a>10.2. Network Protocols</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="ports"></a>11. Ports Collection and Package Infrastructure</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers changes to the FreeBSD Ports
Collection, package infrastructure, and package maintenance and
installation tools. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="ports-infrastructure"></a>11.1. Infrastructure Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="ports-packages"></a>11.2. Packaging Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="doc"></a>12. Documentation</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section covers changes to the FreeBSD Documentation
Project sources and toolchain. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="doc-sources"></a>12.1. Documentation Source Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="doc-toolchain"></a>12.2. Documentation Toolchain Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="releng"></a>13. Release Engineering and Integration</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This section convers changes that are specific to the
FreeBSD Release Engineering processes. </p><div class="sect2"><div xmlns="" class="titlepage"><div><div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="releng-changes"></a>13.1. Integration Changes</h3></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>This file, and other release-related documents,
can be downloaded from <a href="https://www.FreeBSD.org/snapshots/">https://www.FreeBSD.org/snapshots/</a>.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about FreeBSD, read the
<a href="http://www.FreeBSD.org/docs.html">documentation</a> before
contacting &lt;<a href="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>&gt;.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>All users of FreeBSD 11.4-STABLE should
subscribe to the &lt;<a href="mailto:stable@FreeBSD.org">stable@FreeBSD.org</a>&gt;
mailing list.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about this documentation,
e-mail &lt;<a href="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>&gt;.</small></p></body></html>