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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)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 030e2c78d3a91dd0d27fef37e91950dde333eba1
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)