CVE-2016-2543

Published: 24 February 2016

The snd_seq_ioctl_remove_events function in sound/core/seq/seq_clientmgr.c in the Linux kernel before 4.4.1 does not verify FIFO assignment before proceeding with FIFO clearing, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted ioctl call.

From the Ubuntu security team

Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA) framework did not verify that a FIFO was attached to a client before attempting to clear it. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 6.2

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 030e2c78d3a91dd0d27fef37e91950dde333eba1
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])