Input validation error in Linux kernel - CVE-2014-4656
Published: July 3, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41505
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-4656
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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 software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-trusty (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-trusty (Ubuntu package)
How to mitigate CVE-2014-4656
Install update from vendor's website.
linux (Ubuntu package) - addressed in versions 2.6.32-65.131, 3.2.0-68.102, 3.13.0-35.62
linux-lts-trusty (Ubuntu package) - update to 3.13.0-35.62~precise1
linux-lts-trusty (Ubuntu package) - update to 3.13.0-35.62~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=883a1d49f0d77d30012f114b2e19fc141beb3e8e
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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
- http://www.ubuntu.com/usn/USN-2334-1
- http://www.ubuntu.com/usn/USN-2335-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1113470
- https://github.com/torvalds/linux/commit/883a1d49f0d77d30012f114b2e19fc141beb3e8e
- https://github.com/torvalds/linux/commit/ac902c112d90a89e59916f751c2745f4dbdbb4bd
- https://source.android.com/security/bulletin/2017-04-01