What’s Vulnerable › Vulnerabilities

CVE-2012-1146

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2012-05-17 · updated 2026-06-16
• Weakness: CWE-476

Description

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.

Affected products

• Fedoraproject Fedora: 16
• Linux kernel: before 3.2.10 — fixed in 3.2.10
• SUSE Linux Enterprise Server 15 SP1: 11-sp2
• SUSE Linux Enterprise High Availability Extension: 11-sp2
• SUSE Linux Enterprise Server: 11-sp2

How to fix

Upgrade to a fixed version: Linux kernel 3.2.10. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=371528caec553785c37f73fa3926ea0de84f986f
• http://lists.fedoraproject.org/pipermail/package-announce/2012-March/075781.html
• http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
• http://secunia.com/advisories/48898
• http://secunia.com/advisories/48964
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10
• http://www.openwall.com/lists/oss-security/2012/03/07/3
• https://bugzilla.redhat.com/show_bug.cgi?id=800813
• https://exchange.xforce.ibmcloud.com/vulnerabilities/73711
• https://github.com/torvalds/linux/commit/371528caec553785c37f73fa3926ea0de84f986f
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=371528caec553785c37f73fa3926ea0de84f986f
• http://lists.fedoraproject.org/pipermail/package-announce/2012-March/075781.html

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