What’s Vulnerable › Vulnerabilities
CVE-2014-4656
- Severity: medium (CVSS 4.6 v2.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2014-07-03 · updated 2026-06-17
- Weakness: CWE-190
Description
Multiple integer overflows in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 allow local users to cause a denial of service by leveraging /dev/snd/controlCX access, related to (1) index values in the snd_ctl_add function and (2) numid values in the snd_ctl_remove_numid_conflict function.
Affected products
- Canonical Ubuntu Linux: 12.04
- Linux kernel: before 3.15.2 — fixed in 3.15.2
- RedHat Enterprise Linux Desktop: 6.0
- RedHat Enterprise Linux Eus: 6.6
- RedHat Enterprise Linux Server: 6.0
- RedHat Enterprise Linux Server Aus: 6.6
- RedHat Enterprise Linux Server Tus: 6.6
- RedHat Enterprise Linux Workstation: 6.0
- SUSE Linux Enterprise Server: 10-sp4
How to fix
Upgrade to a fixed version: Linux kernel 3.15.2. Check the vendor advisory for mitigations.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=883a1d49f0d77d30012f114b2e19fc141beb3e8e
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ac902c112d90a89e59916f751c2745f4dbdbb4bd
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
- http://rhn.redhat.com/errata/RHSA-2014-1083.html
- http://rhn.redhat.com/errata/RHSA-2015-0087.html
- http://secunia.com/advisories/59434
- http://secunia.com/advisories/59777
- http://secunia.com/advisories/60545
- http://secunia.com/advisories/60564
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2
- http://www.openwall.com/lists/oss-security/2014/06/26/6
- http://www.securitytracker.com/id/1038201
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