Vulnerability Description
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 check authorization for SNDRV_CTL_IOCTL_ELEM_REPLACE commands, which allows local users to remove kernel controls and cause a denial of service (use-after-free and system crash) by leveraging /dev/snd/controlCX access for an ioctl call.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.15.2 |
| Suse | Linux Enterprise Server | 10 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.htmlMailing ListThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2014-1083.htmlThird Party Advisory
- http://secunia.com/advisories/59434Third Party Advisory
- http://secunia.com/advisories/59777Third Party Advisory
- http://secunia.com/advisories/60545Third Party Advisory
- http://secunia.com/advisories/60564Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2Release NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2014/06/26/6Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/68162Third Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2334-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2335-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1113445Issue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/82262a46627bebb0febcc26664746c25cef0856PatchThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
FAQ
What is CVE-2014-4654?
CVE-2014-4654 is a vulnerability with a CVSS score of 4.6 (MEDIUM). 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 check authorization for SNDRV_CTL_IOCTL_ELEM_REPLACE commands, which...
How severe is CVE-2014-4654?
CVE-2014-4654 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-4654?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Suse Linux Enterprise Server, Canonical Ubuntu Linux.