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CVE-2016-2545

Published: 24 February 2016

The snd_timer_interrupt function in sound/core/timer.c in the Linux kernel before 4.4.1 does not properly maintain a certain linked list, which allows local users to cause a denial of service (race condition and system crash) via a crafted ioctl call.

From the Ubuntu security team

Dmitry Vyukov discovered a race condition in the timer handling implementation of the Advanced Linux Sound Architecture (ALSA) framework, resulting in a use-after-free. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 5.1

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.5~rc1)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by ee8413b01045c74340aa13ad5bdf905de32be736
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)