CVE-2012-6703

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-06-29 · updated 2026-06-16
Weakness: CWE-190

Description

Integer overflow in the snd_compr_allocate_buffer function in sound/core/compress_offload.c in the ALSA subsystem in the Linux kernel before 3.6-rc6-next-20120917 allows local users to cause a denial of service (insufficient memory allocation) or possibly have unspecified other impact via a crafted SNDRV_COMPRESS_SET_PARAMS ioctl call.

Affected products

Linux kernel: from 3.3 before 3.7 — fixed in 3.7

How to fix

Upgrade to a fixed version: Linux kernel 3.7. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b35cc8225845112a616e3a2266d2fde5ab13d3ab
http://www.openwall.com/lists/oss-security/2016/06/28/6
http://www.securityfocus.com/bid/91502
http://www.securitytracker.com/id/1036190
https://bugzilla.redhat.com/show_bug.cgi?id=1351076
https://github.com/torvalds/linux/commit/b35cc8225845112a616e3a2266d2fde5ab13d3ab
https://www.kernel.org/pub/linux/kernel/next/patch-v3.6-rc6-next-20120917.xz
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b35cc8225845112a616e3a2266d2fde5ab13d3ab
http://www.openwall.com/lists/oss-security/2016/06/28/6
http://www.securityfocus.com/bid/91502
http://www.securitytracker.com/id/1036190
https://bugzilla.redhat.com/show_bug.cgi?id=1351076

Get alerted when CVE-2012-6703 or the next vulnerability affects your stack