CVE-2014-4653

Published: 3 July 2014

sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not ensure possession of a read/write lock, which allows local users to cause a denial of service (use-after-free) and obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access.

From the Ubuntu Security Team

A use-after-free flaw was discovered in the Advanced Linux Sound Architecture (ALSA) control implementation of the Linux kernel. A local user could exploit this flaw to cause a denial of service (system crash).

Notes

android kernels (goldfish, grouper, maguro, mako and manta) are not
supported on the Ubuntu Touch 13.10 preview kernels
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4653
• https://github.com/torvalds/linux/commit/fd9f26e4eca5d08a27d12c0933fceef76ed9663d
• https://bugzilla.redhat.com/show_bug.cgi?id=1113409
• http://www.openwall.com/lists/oss-security/2014/06/26/6
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fd9f26e4eca5d08a27d12c0933fceef76ed9663d
• https://ubuntu.com/security/notices/USN-2332-1
• https://ubuntu.com/security/notices/USN-2333-1
• https://ubuntu.com/security/notices/USN-2334-1
• https://ubuntu.com/security/notices/USN-2335-1
• https://ubuntu.com/security/notices/USN-2336-1
• https://ubuntu.com/security/notices/USN-2337-1
• NVD
• Launchpad
• Debian

Bugs

• https://launchpad.net/bugs/1339297