PT-2012-3098 · Linux+1 · Linux Kernel+1

Petr Matousek · Published 2012-03-07 · Updated 2023-02-13 · CVE-2012-1146

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.2.10

Description The issue is related to the mem cgroup usage unregister event function in mm/memcontrol.c, which does not properly handle multiple events attached to the same eventfd. This can be exploited by local users to cause a denial of service, resulting in a NULL pointer dereference and system crash, or possibly have other unspecified impacts by registering memory threshold events.

Recommendations For Linux kernel versions prior to 3.2.10, update to version 3.2.10 or later to resolve the issue.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2012-1146

USN-1260-1

USN-1405-1

USN-1406-1

USN-1407-1

USN-1421-1

USN-1422-1

USN-1431-1

USN-1433-1

USN-1440-1

USN-1446-1

USN-1458-1

Affected Products

Linux Kernel

Suse

References · 25

• 🔥 https://github.com/torvalds/linux/commit/371528caec553785c37f73fa3926ea0de84f986f · Exploit
• 🔥 http://openwall.com/lists/oss-security/2012/03/07/3 · Exploit
• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=800813 · Exploit
• https://ubuntu.com/security/notices/USN-1440-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1421-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1446-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1406-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1260-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2012-1146 · Security Note
• https://ubuntu.com/security/notices/USN-1407-1 · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2012-March/075781.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1422-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1405-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2012-1146 · Security Note