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Add EN-20:13 through EN-20:15, and SA-20:18 through SA-20:20.

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Approved by:	so
This commit is contained in:
Gordon Tetlow 2020-07-08 20:50:27 +00:00
parent 06fe15cbbd
commit 38d79cb4d7
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=54319
24 changed files with 128828 additions and 0 deletions
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=============================================================================
FreeBSD-EN-20:13.bhyve Errata Notice
The FreeBSD Project
Topic: Host crash in bhyve with PCI device passthrough
Category: core
Module: bhyve
Announced: 2020-07-08
Credits: Peter Grehan
Affects: FreeBSD 12.1
Corrected: 2020-06-01 05:14:01 UTC (stable/12, 12.1-STABLE)
2020-07-08 19:56:34 UTC (releng/12.1, 12.1-RELEASE-p7)
For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit
<URL:https://security.FreeBSD.org/>.
I. Background
bhyve(8) is a hypervisor that supports running a variety of guest operating
systems in virtual machines. bhyve(8) includes support for PCI devices
passthrough (a technique to pass host PCI devices to a virtual machine for its
exclusive control and use).
II. Problem Description
When an attempt is made to pass through a PCI device to a bhyve(8) VM (causing
initialization of IOMMU) on certain Intel chipsets using VT-d the PCI bus
stops working entirely resulting in a host crash. This issue occurs at least
on the Intel Skylake series processors and those released later.
A device passed through to a guest VM running OpenBSD at least since version
6.4 on both AMD and Intel processors may not fully work in the guest. OpenBSD
issues 4-byte PCI configuration-space register reads and writes to consecutive
2-byte fields, which were not handled correctly by bhyve(8).
III. Impact
These issues prevent using bhyve in production with some combinations of host
hardware and/or guest operating system.
IV. Workaround
No workaround is available. Systems not using bhyve(8) for virtualization
with PCI passthrough are not affected.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date and reboot.
Perform one of the following:
1) To update your system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
# shutdown -r +10min "Rebooting for errata update"
The first problem requires a reboot as the affected part is the kernel.
The second problem does not require a reboot as the affected part is the
bhyve userland executable.
2) To update your system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/EN-20:13/bhyve.patch
# fetch https://security.FreeBSD.org/patches/EN-20:13/bhyve.patch.asc
# gpg --verify bhyve.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
d) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r361686
releng/12.1/ r363022
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229852>
<URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245392>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-20:13.bhyve.asc>
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=============================================================================
FreeBSD-EN-20:14.linuxkpi Errata Notice
The FreeBSD Project
Topic: Kernel panic in LinuxKPI subsystem
Category: core
Module: linuxkpi
Announced: 2020-07-08
Affects: FreeBSD 12.1 and 11.3
Corrected: 2020-01-22 00:30:27 UTC (stable/12, 12.1-STABLE)
2020-07-08 19:57:24 UTC (releng/12.1, 12.1-RELEASE-p7)
2020-01-22 15:51:24 UTC (stable/11, 11.3-STABLE)
2020-07-08 19:57:24 UTC (releng/11.3, 11.3-RELEASE-p11)
Note: FreeBSD 11.4 was branched after the original commit to the stable/11
branch and already includes this erratum.
For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit
<URL:https://security.FreeBSD.org/>.
I. Background
The LinuxKPI subsystem allows kernel code ported from Linux to run in the
FreeBSD kernel without extensive modification. Some graphics drivers make
use of this subsystem.
II. Problem Description
A bug in one of the LinuxKPI subroutines could cause a kernel panic.
III. Impact
Certain graphical applications may trigger a kernel panic. This is most
often observed when using X11 forwarding to run an application remotely.
IV. Workaround
No workaround is available.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date and reboot.
Perform one of the following:
1) To update your system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
# shutdown -r +10min "Rebooting for errata update"
2) To update your system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/EN-20:14/linuxpki.patch
# fetch https://security.FreeBSD.org/patches/EN-20:14/linuxpki.patch.asc
# gpg --verify linuxkpi.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r356953
releng/12.1/ r363023
stable/11/ r356987
releng/11.3/ r363023
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<other info on the problem>
<URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242913>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-20:14.linuxkpi.asc>
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=============================================================================
FreeBSD-EN-20:15.mps Errata Notice
The FreeBSD Project
Topic: Kernel panic in mps(4) driver
Category: core
Module: mps
Announced: 2020-07-08
Affects: All supported version of FreeBSD.
Corrected: 2020-06-11 14:48:20 UTC (stable/12, 12.1-STABLE)
2020-07-08 19:58:00 UTC (releng/12.1, 12.1-RELEASE-p7)
2020-06-11 14:49:38 UTC (stable/11, 11.4-STABLE)
2020-07-08 19:58:00 UTC (releng/11.4, 11.4-RELEASE-p1)
2020-07-08 19:58:00 UTC (releng/11.3, 11.3-RELEASE-p11)
For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit
<URL:https://security.FreeBSD.org/>.
I. Background
mps(4) is a disk controller driver. It exports an ioctl(2) interface used by
several command-line utilities to query for or set properties of the device.
II. Problem Description
mps(4) implements a pass-through interface which allows privileged user
processes to submit commands directly to disks behind the controller. A bug
in the code which copies command results out to the requesting process could
cause a kernel panic.
III. Impact
Administrative commands issued by, e.g., sas2ircu, could cause a kernel panic.
IV. Workaround
No workaround is available. Systems that do not use mps(4) are unaffected.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date and reboot.
Perform one of the following:
1) To update your system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
# shutdown -r +10min "Rebooting for errata update"
2) To update your system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/EN-20:15/mps.patch
# fetch https://security.FreeBSD.org/patches/EN-20:15/mps.patch.asc
# gpg --verify mps.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r362057
releng/12.1/ r363024
stable/11/ r362058
releng/11.4/ r363024
releng/11.3/ r363024
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223813>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-20:15.mps.asc>
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=============================================================================
FreeBSD-SA-20:18.posix_spawnp Security Advisory
The FreeBSD Project
Topic: posix_spawnp(3) buffer overflow
Category: core
Module: libc
Announced: 2020-07-08
Credits: Andrew Gierth
Affects: FreeBSD 11.4
Corrected: 2020-06-17 16:22:08 UTC (stable/12, 12.1-STABLE)
2020-06-17 16:22:08 UTC (stable/11, 11.4-STABLE)
2020-07-08 20:08:05 UTC (releng/11.4, 11.4-RELEASE-p1)
CVE Name: CVE-2020-7458
Note: This vulnerability was introduced after the release of FreeBSD 11.3 and
FreeBSD 12.1; FreeBSD 11.4 is the only affected release.
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit <URL:https://security.FreeBSD.org/>.
I. Background
posix_spawnp(3) is a lightweight process creation mechanism provided by libc
for general application usage.
II. Problem Description
posix_spawnp spawns a new thread with a limited stack allocated on the heap
before delegating to execvp for the final execution within that thread.
execvp would previously make unbounded allocations on the stack, directly
proportional to the length of the user-controlled PATH environment variable.
III. Impact
Long values in the user-controlled PATH environment variable cause
posix_spawnp to write beyond the end of stack that was allocated, ultimately
overflowing the heap-allocated stack with a direct copy of the value stored
in PATH.
IV. Workaround
No workaround is available. Few applications in the base system use
posix_spawnp(3) and none of them are particularly viable candidates for an
exploit. Use by third-party applications has not been investigated.
V. Solution
Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date,
and reboot.
Perform one of the following:
1) To update your vulnerable system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
# shutdown -r +10min "Rebooting for a security update"
2) To update your vulnerable system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
[FreeBSD 11.4]
# fetch https://security.FreeBSD.org/patches/SA-20:18/posix_spawnp.patch
# fetch https://security.FreeBSD.org/patches/SA-20:18/posix_spawnp.patch.asc
# gpg --verify posix_spawnp.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
Restart all daemons that use the library, or reboot the system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r362281
stable/11/ r362281
releng/11.4/ r363025
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7458>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-20:18.posix_spawnp.asc>
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=============================================================================
FreeBSD-SA-20:19.unbound Security Advisory
The FreeBSD Project
Topic: Multiple vulnerabilities in unbound
Category: contrib
Module: unbound
Announced: 2020-07-08
Affects: All supported versions of FreeBSD.
Corrected: 2020-05-24 16:47:27 UTC (stable/12, 12.1-STABLE)
2020-07-08 20:25:06 UTC (releng/12.1, 12.1-RELEASE-p7)
2020-05-24 11:47:27 UTC (stable/11, 11.4-STABLE)
2020-07-08 20:22:38 UTC (releng/11.4, 11.4-RELEASE-p1)
2020-07-08 20:20:59 UTC (releng/11.3, 11.3-RELEASE-p11)
CVE Name: CVE-2020-12662, CVE-2020-12663
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit <URL:https://security.FreeBSD.org/>.
I. Background
Unbound is a validating, recursive, and caching DNS resolver.
II. Problem Description
Malformed answers from upstream name servers can send Unbound into an infinite
loop, resulting in denial of service. A malicious query can cause a traffic
amplification attack against third party authoritative nameservers.
III. Impact
Denial of service of the affected host, or of third parties via traffic
amplification.
IV. Workaround
No workaround is available. Systems not running Unbound are not affected.
V. Solution
Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date.
Perform one of the following:
1) To update your vulnerable system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
2) To update your vulnerable system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
[FreeBSD 12.1]
# fetch https://security.FreeBSD.org/patches/SA-20:19/unbound.12.1.patch
# fetch https://security.FreeBSD.org/patches/SA-20:19/unbound.12.1.patch.asc
# gpg --verify unbound.12.1.patch.asc
[FreeBSD 11.4]
# fetch https://security.FreeBSD.org/patches/SA-20:19/unbound.11.4.patch
# fetch https://security.FreeBSD.org/patches/SA-20:19/unbound.11.4.patch.asc
# gpg --verify unbound.11.4.patch.asc
[FreeBSD 11.3]
# fetch https://security.FreeBSD.org/patches/SA-20:19/unbound.11.3.patch
# fetch https://security.FreeBSD.org/patches/SA-20:19/unbound.11.3.patch.asc
# gpg --verify unbound.11.3.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch -p0 < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
Restart the applicable daemons, or reboot the system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r361435
releng/12.1/ r363029
stable/11/ r361435
releng/11.4/ r363028
releng/11.3/ r363027
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<URL:https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt>
<URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12662>
<URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12663>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc>
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131
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@ -0,0 +1,131 @@
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
=============================================================================
FreeBSD-SA-20:20.ipv6 Security Advisory
The FreeBSD Project
Topic: IPv6 socket option race condition and use after free
Category: core
Module: network
Announced: 2020-07-08
Credits: syzkaller, Andy Nguyen
Affects: All supported versions of FreeBSD.
Corrected: 2020-04-02 15:30:51 UTC (stable/12, 12.1-STABLE)
2020-07-08 20:11:40 UTC (releng/12.1, 12.1-RELEASE-p7)
2020-07-06 20:23:14 UTC (stable/11, 11.4-STABLE)
2020-07-08 20:11:40 UTC (releng/11.4, 11.4-RELEASE-p1)
2020-07-08 20:11:40 UTC (releng/11.3, 11.3-RELEASE-p11)
CVE Name: CVE-2020-7457
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit <URL:https://security.FreeBSD.org/>.
I. Background
The IPV6_2292PKTOPTIONS socket option allows user code to set IPv6
header options on a socket.
II. Problem Description
The IPV6_2292PKTOPTIONS set handler was missing synchronization,
so racing accesses could modify freed memory.
III. Impact
A malicious user application could trigger memory corruption, leading
to privilege escalation.
IV. Workaround
No workaround is available.
V. Solution
Upgrade your vulnerable system to a supported FreeBSD stable or release /
security branch (releng) dated after the correction date and reboot.
Perform one of the following:
1) To update your vulnerable system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
# shutdown -r +10min "Rebooting for a security update"
2) To update your vulnerable system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/SA-20:20/ipv6.patch
# fetch https://security.FreeBSD.org/patches/SA-20:20/ipv6.patch.asc
# gpg --verify ipv6.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r359565
releng/12.1/ r363026
stable/11/ r362975
releng/11.4/ r363026
releng/11.3/ r363026
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<URL:https://hackerone.com/reports/826026>
<URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7457>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc>
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342
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@ -0,0 +1,342 @@
--- sys/amd64/vmm/intel/vtd.c.orig
+++ sys/amd64/vmm/intel/vtd.c
@@ -51,6 +51,8 @@
* Architecture Spec, September 2008.
*/
+#define VTD_DRHD_INCLUDE_PCI_ALL(Flags) (((Flags) >> 0) & 0x1)
+
/* Section 10.4 "Register Descriptions" */
struct vtdmap {
volatile uint32_t version;
@@ -116,10 +118,11 @@
static SLIST_HEAD(, domain) domhead;
#define DRHD_MAX_UNITS 8
-static int drhd_num;
-static struct vtdmap *vtdmaps[DRHD_MAX_UNITS];
-static int max_domains;
-typedef int (*drhd_ident_func_t)(void);
+static ACPI_DMAR_HARDWARE_UNIT *drhds[DRHD_MAX_UNITS];
+static int drhd_num;
+static struct vtdmap *vtdmaps[DRHD_MAX_UNITS];
+static int max_domains;
+typedef int (*drhd_ident_func_t)(void);
static uint64_t root_table[PAGE_SIZE / sizeof(uint64_t)] __aligned(4096);
static uint64_t ctx_tables[256][PAGE_SIZE / sizeof(uint64_t)] __aligned(4096);
@@ -175,6 +178,69 @@
return (id);
}
+static struct vtdmap *
+vtd_device_scope(uint16_t rid)
+{
+ int i, remaining, pathremaining;
+ char *end, *pathend;
+ struct vtdmap *vtdmap;
+ ACPI_DMAR_HARDWARE_UNIT *drhd;
+ ACPI_DMAR_DEVICE_SCOPE *device_scope;
+ ACPI_DMAR_PCI_PATH *path;
+
+ for (i = 0; i < drhd_num; i++) {
+ drhd = drhds[i];
+
+ if (VTD_DRHD_INCLUDE_PCI_ALL(drhd->Flags)) {
+ /*
+ * From Intel VT-d arch spec, version 3.0:
+ * If a DRHD structure with INCLUDE_PCI_ALL flag Set is reported
+ * for a Segment, it must be enumerated by BIOS after all other
+ * DRHD structures for the same Segment.
+ */
+ vtdmap = vtdmaps[i];
+ return(vtdmap);
+ }
+
+ end = (char *)drhd + drhd->Header.Length;
+ remaining = drhd->Header.Length - sizeof(ACPI_DMAR_HARDWARE_UNIT);
+ while (remaining > sizeof(ACPI_DMAR_DEVICE_SCOPE)) {
+ device_scope = (ACPI_DMAR_DEVICE_SCOPE *)(end - remaining);
+ remaining -= device_scope->Length;
+
+ switch (device_scope->EntryType){
+ /* 0x01 and 0x02 are PCI device entries */
+ case 0x01:
+ case 0x02:
+ break;
+ default:
+ continue;
+ }
+
+ if (PCI_RID2BUS(rid) != device_scope->Bus)
+ continue;
+
+ pathend = (char *)device_scope + device_scope->Length;
+ pathremaining = device_scope->Length - sizeof(ACPI_DMAR_DEVICE_SCOPE);
+ while (pathremaining >= sizeof(ACPI_DMAR_PCI_PATH)) {
+ path = (ACPI_DMAR_PCI_PATH *)(pathend - pathremaining);
+ pathremaining -= sizeof(ACPI_DMAR_PCI_PATH);
+
+ if (PCI_RID2SLOT(rid) != path->Device)
+ continue;
+ if (PCI_RID2FUNC(rid) != path->Function)
+ continue;
+
+ vtdmap = vtdmaps[i];
+ return (vtdmap);
+ }
+ }
+ }
+
+ /* No matching scope */
+ return (NULL);
+}
+
static void
vtd_wbflush(struct vtdmap *vtdmap)
{
@@ -240,7 +306,7 @@
static int
vtd_init(void)
{
- int i, units, remaining;
+ int i, units, remaining, tmp;
struct vtdmap *vtdmap;
vm_paddr_t ctx_paddr;
char *end, envname[32];
@@ -291,8 +357,9 @@
break;
drhd = (ACPI_DMAR_HARDWARE_UNIT *)hdr;
- vtdmaps[units++] = (struct vtdmap *)PHYS_TO_DMAP(drhd->Address);
- if (units >= DRHD_MAX_UNITS)
+ drhds[units] = drhd;
+ vtdmaps[units] = (struct vtdmap *)PHYS_TO_DMAP(drhd->Address);
+ if (++units >= DRHD_MAX_UNITS)
break;
remaining -= hdr->Length;
}
@@ -302,12 +369,18 @@
skip_dmar:
drhd_num = units;
- vtdmap = vtdmaps[0];
- if (VTD_CAP_CM(vtdmap->cap) != 0)
- panic("vtd_init: invalid caching mode");
+ max_domains = 64 * 1024; /* maximum valid value */
+ for (i = 0; i < drhd_num; i++){
+ vtdmap = vtdmaps[i];
+
+ if (VTD_CAP_CM(vtdmap->cap) != 0)
+ panic("vtd_init: invalid caching mode");
- max_domains = vtd_max_domains(vtdmap);
+ /* take most compatible (minimum) value */
+ if ((tmp = vtd_max_domains(vtdmap)) < max_domains)
+ max_domains = tmp;
+ }
/*
* Set up the root-table to point to the context-entry tables
@@ -373,7 +446,6 @@
struct vtdmap *vtdmap;
uint8_t bus;
- vtdmap = vtdmaps[0];
bus = PCI_RID2BUS(rid);
ctxp = ctx_tables[bus];
pt_paddr = vtophys(dom->ptp);
@@ -385,6 +457,10 @@
(uint16_t)(ctxp[idx + 1] >> 8));
}
+ if ((vtdmap = vtd_device_scope(rid)) == NULL)
+ panic("vtd_add_device: device %x is not in scope for "
+ "any DMA remapping unit", rid);
+
/*
* Order is important. The 'present' bit is set only after all fields
* of the context pointer are initialized.
@@ -568,8 +644,6 @@
if (drhd_num <= 0)
panic("vtd_create_domain: no dma remapping hardware available");
- vtdmap = vtdmaps[0];
-
/*
* Calculate AGAW.
* Section 3.4.2 "Adjusted Guest Address Width", Architecture Spec.
@@ -594,7 +668,14 @@
pt_levels = 2;
sagaw = 30;
addrwidth = 0;
- tmp = VTD_CAP_SAGAW(vtdmap->cap);
+
+ tmp = ~0;
+ for (i = 0; i < drhd_num; i++) {
+ vtdmap = vtdmaps[i];
+ /* take most compatible value */
+ tmp &= VTD_CAP_SAGAW(vtdmap->cap);
+ }
+
for (i = 0; i < 5; i++) {
if ((tmp & (1 << i)) != 0 && sagaw >= agaw)
break;
@@ -606,8 +687,8 @@
}
if (i >= 5) {
- panic("vtd_create_domain: SAGAW 0x%lx does not support AGAW %d",
- VTD_CAP_SAGAW(vtdmap->cap), agaw);
+ panic("vtd_create_domain: SAGAW 0x%x does not support AGAW %d",
+ tmp, agaw);
}
dom = malloc(sizeof(struct domain), M_VTD, M_ZERO | M_WAITOK);
@@ -634,7 +715,12 @@
* There is not any code to deal with the demotion at the moment
* so we disable superpage mappings altogether.
*/
- dom->spsmask = VTD_CAP_SPS(vtdmap->cap);
+ dom->spsmask = ~0;
+ for (i = 0; i < drhd_num; i++) {
+ vtdmap = vtdmaps[i];
+ /* take most compatible value */
+ dom->spsmask &= VTD_CAP_SPS(vtdmap->cap);
+ }
#endif
SLIST_INSERT_HEAD(&domhead, dom, next);
--- usr.sbin/bhyve/pci_emul.c.orig
+++ usr.sbin/bhyve/pci_emul.c
@@ -868,7 +868,7 @@
sizeof(msixcap)));
}
-void
+static void
msixcap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
int bytes, uint32_t val)
{
@@ -892,7 +892,7 @@
CFGWRITE(pi, offset, val, bytes);
}
-void
+static void
msicap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
int bytes, uint32_t val)
{
@@ -971,30 +971,34 @@
/*
* This function assumes that 'coff' is in the capabilities region of the
- * config space.
+ * config space. A capoff parameter of zero will force a search for the
+ * offset and type.
*/
-static void
-pci_emul_capwrite(struct pci_devinst *pi, int offset, int bytes, uint32_t val)
+void
+pci_emul_capwrite(struct pci_devinst *pi, int offset, int bytes, uint32_t val,
+ uint8_t capoff, int capid)
{
- int capid;
- uint8_t capoff, nextoff;
+ uint8_t nextoff;
/* Do not allow un-aligned writes */
if ((offset & (bytes - 1)) != 0)
return;
- /* Find the capability that we want to update */
- capoff = CAP_START_OFFSET;
- while (1) {
- nextoff = pci_get_cfgdata8(pi, capoff + 1);
- if (nextoff == 0)
- break;
- if (offset >= capoff && offset < nextoff)
- break;
+ if (capoff == 0) {
+ /* Find the capability that we want to update */
+ capoff = CAP_START_OFFSET;
+ while (1) {
+ nextoff = pci_get_cfgdata8(pi, capoff + 1);
+ if (nextoff == 0)
+ break;
+ if (offset >= capoff && offset < nextoff)
+ break;
- capoff = nextoff;
+ capoff = nextoff;
+ }
+ assert(offset >= capoff);
+ capid = pci_get_cfgdata8(pi, capoff);
}
- assert(offset >= capoff);
/*
* Capability ID and Next Capability Pointer are readonly.
@@ -1011,7 +1015,6 @@
return;
}
- capid = pci_get_cfgdata8(pi, capoff);
switch (capid) {
case PCIY_MSI:
msicap_cfgwrite(pi, capoff, offset, bytes, val);
@@ -1878,7 +1881,7 @@
pci_set_cfgdata32(pi, coff, bar);
} else if (pci_emul_iscap(pi, coff)) {
- pci_emul_capwrite(pi, coff, bytes, *eax);
+ pci_emul_capwrite(pi, coff, bytes, *eax, 0, 0);
} else if (coff >= PCIR_COMMAND && coff < PCIR_REVID) {
pci_emul_cmdsts_write(pi, coff, *eax, bytes);
} else {
--- usr.sbin/bhyve/pci_emul.h.orig
+++ usr.sbin/bhyve/pci_emul.h
@@ -212,10 +212,6 @@
int ioapic_irq, void *arg);
int init_pci(struct vmctx *ctx);
-void msicap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
- int bytes, uint32_t val);
-void msixcap_cfgwrite(struct pci_devinst *pi, int capoff, int offset,
- int bytes, uint32_t val);
void pci_callback(void);
int pci_emul_alloc_bar(struct pci_devinst *pdi, int idx,
enum pcibar_type type, uint64_t size);
@@ -223,6 +219,8 @@
uint64_t hostbase, enum pcibar_type type, uint64_t size);
int pci_emul_add_msicap(struct pci_devinst *pi, int msgnum);
int pci_emul_add_pciecap(struct pci_devinst *pi, int pcie_device_type);
+void pci_emul_capwrite(struct pci_devinst *pi, int offset, int bytes,
+ uint32_t val, uint8_t capoff, int capid);
void pci_generate_msi(struct pci_devinst *pi, int msgnum);
void pci_generate_msix(struct pci_devinst *pi, int msgnum);
void pci_lintr_assert(struct pci_devinst *pi);
--- usr.sbin/bhyve/pci_passthru.c.orig
+++ usr.sbin/bhyve/pci_passthru.c
@@ -828,8 +828,8 @@
* MSI capability is emulated
*/
if (msicap_access(sc, coff)) {
- msicap_cfgwrite(pi, sc->psc_msi.capoff, coff, bytes, val);
-
+ pci_emul_capwrite(pi, coff, bytes, val, sc->psc_msi.capoff,
+ PCIY_MSI);
error = vm_setup_pptdev_msi(ctx, vcpu, sc->psc_sel.pc_bus,
sc->psc_sel.pc_dev, sc->psc_sel.pc_func,
pi->pi_msi.addr, pi->pi_msi.msg_data,
@@ -840,7 +840,8 @@
}
if (msixcap_access(sc, coff)) {
- msixcap_cfgwrite(pi, sc->psc_msix.capoff, coff, bytes, val);
+ pci_emul_capwrite(pi, coff, bytes, val, sc->psc_msix.capoff,
+ PCIY_MSIX);
if (pi->pi_msix.enabled) {
msix_table_entries = pi->pi_msix.table_count;
for (i = 0; i < msix_table_entries; i++) {

18
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12
share/security/patches/EN-20:14/linuxkpi.patch Normal file
View file

@ -0,0 +1,12 @@
--- sys/compat/linuxkpi/common/src/linux_compat.c.orig
+++ sys/compat/linuxkpi/common/src/linux_compat.c
@@ -1502,6 +1502,9 @@
KASSERT(file_count(filp) == 0,
("File refcount(%d) is not zero", file_count(filp)));
+ if (td == NULL)
+ td = curthread;
+
error = 0;
filp->f_flags = file->f_flag;
linux_set_current(td);

18
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18
share/security/patches/EN-20:15/mps.patch Normal file
View file

@ -0,0 +1,18 @@
--- sys/dev/mps/mps_user.c.orig
+++ sys/dev/mps/mps_user.c
@@ -1045,10 +1045,12 @@
if (((MPI2_SCSI_IO_REPLY *)rpl)->SCSIState &
MPI2_SCSI_STATE_AUTOSENSE_VALID) {
sense_len =
- MIN((le32toh(((MPI2_SCSI_IO_REPLY *)rpl)->SenseCount)),
- sizeof(struct scsi_sense_data));
+ MIN((le32toh(((MPI2_SCSI_IO_REPLY *)rpl)->
+ SenseCount)), sizeof(struct
+ scsi_sense_data));
mps_unlock(sc);
- copyout(cm->cm_sense, cm->cm_req + 64, sense_len);
+ copyout(cm->cm_sense, (PTRIN(data->PtrReply +
+ sizeof(MPI2_SCSI_IO_REPLY))), sense_len);
mps_lock(sc);
}
}

18
share/security/patches/EN-20:15/mps.patch.asc Normal file
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-----END PGP SIGNATURE-----

280
share/security/patches/SA-20:18/posix_spawnp.patch Normal file
View file

@ -0,0 +1,280 @@
--- lib/libc/gen/exec.c.orig
+++ lib/libc/gen/exec.c
@@ -49,6 +49,9 @@
extern char **environ;
+static const char execvPe_err_preamble[] = "execvP: ";
+static const char execvPe_err_trailer[] = ": path too long\n";
+
int
execl(const char *name, const char *arg, ...)
{
@@ -149,8 +152,8 @@
const char **memp;
size_t cnt, lp, ln;
int eacces, save_errno;
- char *cur, buf[MAXPATHLEN];
- const char *p, *bp;
+ char buf[MAXPATHLEN];
+ const char *bp, *np, *op, *p;
struct stat sb;
eacces = 0;
@@ -158,7 +161,7 @@
/* If it's an absolute or relative path name, it's easy. */
if (strchr(name, '/')) {
bp = name;
- cur = NULL;
+ op = NULL;
goto retry;
}
bp = buf;
@@ -169,24 +172,31 @@
return (-1);
}
- cur = alloca(strlen(path) + 1);
- if (cur == NULL) {
- errno = ENOMEM;
- return (-1);
- }
- strcpy(cur, path);
- while ((p = strsep(&cur, ":")) != NULL) {
+ op = path;
+ ln = strlen(name);
+ while (op != NULL) {
+ np = strchrnul(op, ':');
+
/*
* It's a SHELL path -- double, leading and trailing colons
* mean the current directory.
*/
- if (*p == '\0') {
+ if (np == op) {
+ /* Empty component. */
p = ".";
lp = 1;
- } else
- lp = strlen(p);
- ln = strlen(name);
+ } else {
+ /* Non-empty component. */
+ p = op;
+ lp = np - op;
+ }
+ /* Advance to the next component or terminate after this. */
+ if (*np == '\0')
+ op = NULL;
+ else
+ op = np + 1;
+
/*
* If the path is too long complain. This is a possible
* security issue; given a way to make the path too long
@@ -193,10 +203,11 @@
* the user may execute the wrong program.
*/
if (lp + ln + 2 > sizeof(buf)) {
- (void)_write(STDERR_FILENO, "execvP: ", 8);
+ (void)_write(STDERR_FILENO, execvPe_err_preamble,
+ sizeof(execvPe_err_preamble) - 1);
(void)_write(STDERR_FILENO, p, lp);
- (void)_write(STDERR_FILENO, ": path too long\n",
- 16);
+ (void)_write(STDERR_FILENO, execvPe_err_trailer,
+ sizeof(execvPe_err_trailer) - 1);
continue;
}
bcopy(p, buf, lp);
@@ -215,14 +226,28 @@
case ENOEXEC:
for (cnt = 0; argv[cnt]; ++cnt)
;
- memp = alloca((cnt + 2) * sizeof(char *));
+
+ /*
+ * cnt may be 0 above; always allocate at least
+ * 3 entries so that we can at least fit "sh", bp, and
+ * the NULL terminator. We can rely on cnt to take into
+ * account the NULL terminator in all other scenarios,
+ * as we drop argv[0].
+ */
+ memp = alloca(MAX(3, cnt + 2) * sizeof(char *));
if (memp == NULL) {
/* errno = ENOMEM; XXX override ENOEXEC? */
goto done;
}
- memp[0] = "sh";
- memp[1] = bp;
- bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
+ if (cnt > 0) {
+ memp[0] = argv[0];
+ memp[1] = bp;
+ bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
+ } else {
+ memp[0] = "sh";
+ memp[1] = bp;
+ memp[2] = NULL;
+ }
(void)_execve(_PATH_BSHELL,
__DECONST(char **, memp), envp);
goto done;
--- lib/libc/gen/posix_spawn.c.orig
+++ lib/libc/gen/posix_spawn.c
@@ -28,6 +28,7 @@
__FBSDID("$FreeBSD$");
#include "namespace.h"
+#include <sys/param.h>
#include <sys/queue.h>
#include <sys/wait.h>
@@ -202,8 +203,20 @@
volatile int error;
};
+#define PSPAWN_STACK_ALIGNMENT 16
+#define PSPAWN_STACK_ALIGNBYTES (PSPAWN_STACK_ALIGNMENT - 1)
+#define PSPAWN_STACK_ALIGN(sz) \
+ (((sz) + PSPAWN_STACK_ALIGNBYTES) & ~PSPAWN_STACK_ALIGNBYTES)
+
#if defined(__i386__) || defined(__amd64__)
+/*
+ * Below we'll assume that _RFORK_THREAD_STACK_SIZE is appropriately aligned for
+ * the posix_spawn() case where we do not end up calling _execvpe and won't ever
+ * try to allocate space on the stack for argv[].
+ */
#define _RFORK_THREAD_STACK_SIZE 4096
+_Static_assert((_RFORK_THREAD_STACK_SIZE % PSPAWN_STACK_ALIGNMENT) == 0,
+ "Inappropriate stack size alignment");
#endif
static int
@@ -244,10 +257,36 @@
pid_t p;
#ifdef _RFORK_THREAD_STACK_SIZE
char *stack;
+ size_t cnt, stacksz;
- stack = malloc(_RFORK_THREAD_STACK_SIZE);
+ stacksz = _RFORK_THREAD_STACK_SIZE;
+ if (use_env_path) {
+ /*
+ * We need to make sure we have enough room on the stack for the
+ * potential alloca() in execvPe if it gets kicked back an
+ * ENOEXEC from execve(2), plus the original buffer we gave
+ * ourselves; this protects us in the event that the caller
+ * intentionally or inadvertently supplies enough arguments to
+ * make us blow past the stack we've allocated from it.
+ */
+ for (cnt = 0; argv[cnt] != NULL; ++cnt)
+ ;
+ stacksz += MAX(3, cnt + 2) * sizeof(char *);
+ stacksz = PSPAWN_STACK_ALIGN(stacksz);
+ }
+
+ /*
+ * aligned_alloc is not safe to use here, because we can't guarantee
+ * that aligned_alloc and free will be provided by the same
+ * implementation. We've actively hit at least one application that
+ * will provide its own malloc/free but not aligned_alloc leading to
+ * a free by the wrong allocator.
+ */
+ stack = malloc(stacksz);
if (stack == NULL)
return (ENOMEM);
+ stacksz = (((uintptr_t)stack + stacksz) & ~PSPAWN_STACK_ALIGNBYTES) -
+ (uintptr_t)stack;
#endif
psa.path = path;
psa.fa = fa;
@@ -271,8 +310,7 @@
* parent. Because of this, we must use rfork_thread instead while
* almost every other arch stores the return address in a register.
*/
- p = rfork_thread(RFSPAWN, stack + _RFORK_THREAD_STACK_SIZE,
- _posix_spawn_thr, &psa);
+ p = rfork_thread(RFSPAWN, stack + stacksz, _posix_spawn_thr, &psa);
free(stack);
#else
p = rfork(RFSPAWN);
--- lib/libc/tests/gen/Makefile.orig
+++ lib/libc/tests/gen/Makefile
@@ -20,6 +20,15 @@
# TODO: t_siginfo (fixes require further inspection)
# TODO: t_sethostname_test (consistently screws up the hostname)
+FILESGROUPS+= posix_spawn_test_FILES
+
+posix_spawn_test_FILES= spawnp_enoexec.sh
+posix_spawn_test_FILESDIR= ${TESTSDIR}
+posix_spawn_test_FILESMODE= 0755
+posix_spawn_test_FILESOWN= root
+posix_spawn_test_FILESGRP= wheel
+posix_spawn_test_FILESPACKAGE= ${PACKAGE}
+
CFLAGS+= -DTEST_LONG_DOUBLE
# Not sure why this isn't defined for all architectures, since most
--- lib/libc/tests/gen/posix_spawn_test.c.orig
+++ lib/libc/tests/gen/posix_spawn_test.c
@@ -93,11 +93,50 @@
}
}
+ATF_TC_WITHOUT_HEAD(posix_spawnp_enoexec_fallback);
+ATF_TC_BODY(posix_spawnp_enoexec_fallback, tc)
+{
+ char buf[FILENAME_MAX];
+ char *myargs[2];
+ int error, status;
+ pid_t pid, waitres;
+
+ snprintf(buf, sizeof(buf), "%s/spawnp_enoexec.sh",
+ atf_tc_get_config_var(tc, "srcdir"));
+ myargs[0] = buf;
+ myargs[1] = NULL;
+ error = posix_spawnp(&pid, myargs[0], NULL, NULL, myargs, myenv);
+ ATF_REQUIRE(error == 0);
+ waitres = waitpid(pid, &status, 0);
+ ATF_REQUIRE(waitres == pid);
+ ATF_REQUIRE(WIFEXITED(status) && WEXITSTATUS(status) == 42);
+}
+
+ATF_TC_WITHOUT_HEAD(posix_spawnp_enoexec_fallback_null_argv0);
+ATF_TC_BODY(posix_spawnp_enoexec_fallback_null_argv0, tc)
+{
+ char buf[FILENAME_MAX];
+ char *myargs[1];
+ int error, status;
+ pid_t pid, waitres;
+
+ snprintf(buf, sizeof(buf), "%s/spawnp_enoexec.sh",
+ atf_tc_get_config_var(tc, "srcdir"));
+ myargs[0] = NULL;
+ error = posix_spawnp(&pid, buf, NULL, NULL, myargs, myenv);
+ ATF_REQUIRE(error == 0);
+ waitres = waitpid(pid, &status, 0);
+ ATF_REQUIRE(waitres == pid);
+ ATF_REQUIRE(WIFEXITED(status) && WEXITSTATUS(status) == 42);
+}
+
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, posix_spawn_simple_test);
ATF_TP_ADD_TC(tp, posix_spawn_no_such_command_negative_test);
+ ATF_TP_ADD_TC(tp, posix_spawnp_enoexec_fallback);
+ ATF_TP_ADD_TC(tp, posix_spawnp_enoexec_fallback_null_argv0);
return (atf_no_error());
}
--- lib/libc/tests/gen/spawnp_enoexec.sh.orig
+++ lib/libc/tests/gen/spawnp_enoexec.sh
@@ -0,0 +1,4 @@
+# $FreeBSD$
+# Intentionally no interpreter
+
+exit 42

18
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-----END PGP SIGNATURE-----

27
share/security/patches/SA-20:20/ipv6.patch Normal file
View file

@ -0,0 +1,27 @@
--- sys/netinet6/ip6_output.c.orig
+++ sys/netinet6/ip6_output.c
@@ -1514,8 +1514,10 @@
error = soopt_mcopyin(sopt, m); /* XXX */
if (error != 0)
break;
+ INP_WLOCK(in6p);
error = ip6_pcbopts(&in6p->in6p_outputopts,
m, so, sopt);
+ INP_WUNLOCK(in6p);
m_freem(m); /* XXX */
break;
}
@@ -2260,8 +2262,11 @@
printf("ip6_pcbopts: all specified options are cleared.\n");
#endif
ip6_clearpktopts(opt, -1);
- } else
- opt = malloc(sizeof(*opt), M_IP6OPT, M_WAITOK);
+ } else {
+ opt = malloc(sizeof(*opt), M_IP6OPT, M_NOWAIT);
+ if (opt == NULL)
+ return (ENOMEM);
+ }
*pktopt = NULL;
if (!m || m->m_len == 0) {

18
share/security/patches/SA-20:20/ipv6.patch.asc Normal file
View file

@ -0,0 +1,18 @@
-----BEGIN PGP SIGNATURE-----
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-----END PGP SIGNATURE-----

21
share/xml/advisories.xml
View file

@ -7,6 +7,27 @@
<year> <year>
<name>2020</name> <name>2020</name>
<month>
<name>7</name>
<day>
<name>8</name>
<advisory>
<name>FreeBSD-SA-20:20.ipv6</name>
</advisory>
<advisory>
<name>FreeBSD-SA-20:19.unbound</name>
</advisory>
<advisory>
<name>FreeBSD-SA-20:18.posix_spawnp</name>
</advisory>
</day>
</month>
<month> <month>
<name>6</name> <name>6</name>

21
share/xml/notices.xml
View file

@ -7,6 +7,27 @@
<year> <year>
<name>2020</name> <name>2020</name>
<month>
<name>7</name>
<day>
<name>8</name>
<notice>
<name>FreeBSD-EN-20:15.mps</name>
</notice>
<notice>
<name>FreeBSD-EN-20:14.linuxkpi</name>
</notice>
<notice>
<name>FreeBSD-EN-20:13.bhyve</name>
</notice>
</day>
</month>
<month> <month>
<name>6</name> <name>6</name>