National Cyber Awareness System

Vulnerability Summary for CVE-2012-1146

Overview

The mem_cgroup_usage_unregister_event function in mm/memcontrol.c in the Linux kernel before 3.2.10 does not properly handle multiple events that are attached to the same eventfd, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by registering memory threshold events.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://github.com/torvalds/linux/commit/371528caec553785c37f73fa3926ea0de84f986f

Hyperlink:https://github.com/torvalds/linux/commit/371528caec553785c37f73fa3926ea0de84f986f

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=800813

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=800813

External Source: XF

Name: kernel-memcg-dos(73711)

Hyperlink:http://xforce.iss.net/xforce/xfdb/73711

External Source: MLIST

Name: [oss-security] 20120307 Re: CVE request -- kernel: mm: memcg: unregistring of events attached to the same eventfd can lead to oops

Hyperlink:http://www.openwall.com/lists/oss-security/2012/03/07/3

External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10

Hyperlink:http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10

External Source: SECUNIA

Name: 48964

Hyperlink:http://secunia.com/advisories/48964

External Source: SECUNIA

Name: 48898

Hyperlink:http://secunia.com/advisories/48898

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=371528caec553785c37f73fa3926ea0de84f986f

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=371528caec553785c37f73fa3926ea0de84f986f