CVE-2016-3157

Priority
Description
The __switch_to function in arch/x86/kernel/process_64.c in the Linux
kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which
allows local guest OS users to gain privileges, cause a denial of service
(guest OS crash), or obtain sensitive information by leveraging I/O port
access.
Ubuntu-Description
Andy Lutomirski discovered that the Linux kernel did not properly context-
switch IOPL on 64-bit PV Xen guests. An attacker in a guest OS could use
this to cause a denial of service (guest OS crash), gain privileges, or
obtain sensitive information.
Notes
 jdstrand> android kernels (flo, goldfish, grouper, maguro, mako and manta) are
  not supported on the Ubuntu Touch 14.10 and earlier preview kernels
 jdstrand> linux-lts-saucy no longer receives official support
 jdstrand> linux-lts-quantal no longer receives official support
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):released (3.2.0-104.145)
Ubuntu 14.04 LTS (Trusty Tahr):released (3.13.0-86.130)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-22.39)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed by b7a584598aea7ca73140cb87b40319944dd3393f
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was released [3.2.0-1667.92])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (4.4.0-1002.2)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1001.10)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1003.3)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Package
linux-krillin:ignored (was needed now end-of-life)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Patches:
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):released (3.13.0-86.130~precise1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (3.16.0-71.91~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (3.19.0-59.65~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (4.2.0-36.41~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (4.4.0-22.39~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1010.12)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1013.14)
Package
Upstream:released (4.6~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was released [3.2.0-1482.109])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
linux-vegetahd:ignored (was needed now end-of-life)
More Information

Updated: 2019-01-14 22:26:00 UTC (commit 51f9b73af244ba86b9321e46e526586c25a8e060)