CVE-2012-2133 Use after free in n/a

What is CVE-2012-2133?

CVE-2012-2133 is a medium-severity use after free vulnerability in Linux kernel, published on 3 Jul 2012. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-399

Which versions are affected by CVE-2012-2133?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2012-2133?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2012-2133 being exploited?

There is no known exploitation of CVE-2012-2133 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gj53-vvfv-7vp2.