CVE-2016-2547

Published: 24 February 2016

sound/core/timer.c in the Linux kernel before 4.4.1 employs a locking approach that does not consider slave timer instances, which allows local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call.

From the Ubuntu security team

Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA) framework's handling of high resolution timers did not properly manage its data structures. A local attacker could use this to cause a denial of service (system hang or crash) or possibly execute arbitrary code.

Priority

Medium

CVSS 3 base score: 5.1

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-4.19)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.13.0-83.127)
Ubuntu 12.04 ESM (Precise Pangolin)
Released (3.2.0-102.142)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by b5a663aa426f4884c71cd8580adae73f33570f0d
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was released [3.2.0-1665.90])
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-1001.10)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.4.0-1002.2)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-1003.3)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.8.0-36.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.8.0-36.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [end-of-life])
Patches:
DNE
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [end-of-life])
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [end-of-life])
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin)
Released (3.13.0-83.127~precise1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [3.16.0-67.87~14.04.1])
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [3.19.0-56.62~14.04.1])
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [4.2.0-30.35~14.04.1])
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.4.0-13.29~14.04.1)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-1003.4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-1012.12)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was released [3.2.0-1480.106])