CVE-2014-4655

Kernel: ALSA: control: use-after-free in replacing user controls

Severity Score

4.9

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La función snd_ctl_elem_add en sound/core/control.c en la implementación del control ALSA en el kernel de Linux anterior a 3.15.2 no gestiona debidamente el valor user_ctl_count, lo que permite a usuarios locales causar una denegación de servicio (desbordamiento de enteros y evadir el limite) mediante el aprovechamiento de acceso /dev/snd/controlCX para un numero largo de llamadas SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl.

A use-after-free flaw was found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled user controls. A local, privileged user could use this flaw to crash the system.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Attack Vector

Local

Attack Complexity

High

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-06-25 CVE Reserved
2014-07-03 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-190: Integer Overflow or Wraparound
CWE-416: Use After Free

CAPEC

References (16)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=82262a46627bebb0febcc26664746c25cef08563	X_refsource_confirm
http://secunia.com/advisories/59434	Third Party Advisory
http://secunia.com/advisories/59777	Third Party Advisory
http://secunia.com/advisories/60545	Third Party Advisory
http://secunia.com/advisories/60564	Third Party Advisory
http://www.openwall.com/lists/oss-security/2014/06/26/6	Mailing List
http://www.securityfocus.com/bid/68162	Third Party Advisory
http://www.securitytracker.com/id/1036763	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/torvalds/linux/commit/82262a46627bebb0febcc26664746c25cef08563	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2014-1083.html	2023-11-07
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2	2023-11-07
http://www.ubuntu.com/usn/USN-2334-1	2023-11-07
http://www.ubuntu.com/usn/USN-2335-1	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=1113445	2014-12-09
https://access.redhat.com/security/cve/CVE-2014-4655	2014-12-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 3.15.2 Search vendor "Linux" for product "Linux Kernel" and version " < 3.15.2"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Server Search vendor "Suse" for product "Linux Enterprise Server"				10 Search vendor "Suse" for product "Linux Enterprise Server" and version "10"		sp4, ltss		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected