Use After Free Affecting kernel-firmware package, versions <0:2.6.32-504.el6


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS6-KERNELFIRMWARE-2102738
  • published26 Jul 2021
  • disclosed18 Jun 2014

Introduced: 18 Jun 2014

CVE-2014-4655  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:6 kernel-firmware to version 0:2.6.32-504.el6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-firmware package and not the kernel-firmware package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not properly maintain the user_ctl_count value, which allows local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl calls.

CVSS Scores

version 3.1