CVE-2012-2133

Severity: medium (CVSS 4.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-07-03 · updated 2026-06-16
Weakness: CWE-399

Description

Use-after-free vulnerability in the Linux kernel before 3.3.6, when huge pages are enabled, allows local users to cause a denial of service (system crash) or possibly gain privileges by interacting with a hugetlbfs filesystem, as demonstrated by a umount operation that triggers improper handling of quota data.

Affected products

Linux kernel: through 3.3.5; 3.3, 3.3.1, 3.3.2, 3.3.3, 3.3.4

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=90481622d75715bfcb68501280a917dbfe516029
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
http://www.debian.org/security/2012/dsa-2469
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.6
http://www.openwall.com/lists/oss-security/2012/04/24/12
http://www.securityfocus.com/bid/53233
https://bugzilla.redhat.com/show_bug.cgi?id=817430
https://exchange.xforce.ibmcloud.com/vulnerabilities/75168
https://github.com/torvalds/linux/commit/90481622d75715bfcb68501280a917dbfe516029
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=90481622d75715bfcb68501280a917dbfe516029
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
http://www.debian.org/security/2012/dsa-2469

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