CVE-2012-2133: Linux Kernel

Medium severity, CVSS 4.0. EPSS: 0.3% chance of exploitation in the next 30 days.

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 Linux Kernel: up to and including 3.3.5; version 3.3 only; version 3.3.1 only; version 3.3.2 only; version 3.3.3 only; version 3.3.4 only

Published 2012-07-03. Last modified 2026-06-16.