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)
|
Notes
| Author | Note |
|---|---|
| jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2543
- http://www.openwall.com/lists/oss-security/2016/02/23/11
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=030e2c78d3a91dd0d27fef37e91950dde333eba1
- https://ubuntu.com/security/notices/USN-2931-1
- https://ubuntu.com/security/notices/USN-2932-1
- https://ubuntu.com/security/notices/USN-2929-2
- https://ubuntu.com/security/notices/USN-2929-1
- https://ubuntu.com/security/notices/USN-2930-1
- https://ubuntu.com/security/notices/USN-2930-3
- https://ubuntu.com/security/notices/USN-2930-2
- https://ubuntu.com/security/notices/USN-2967-2
- https://ubuntu.com/security/notices/USN-2967-1
- NVD
- Launchpad
- Debian