CVE-2012-2133

4.0 MEDIUM 0.3% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2012-07-03 16:40 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:41 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 4.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2012-07-03 16:40 UTC
Last modified: 2026-06-16 23:41 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-399
Record status: Modified

Affected

Linux Kernel ≤ 3.3.5
Linux Kernel 3.3
Linux Kernel 3.3.1
Linux Kernel 3.3.2
Linux Kernel 3.3.3
Linux Kernel 3.3.4

Attack profile CVSS 2.0 · 4.0

Attack vector: Local
Complexity: High
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:L/AC:H/Au:N/C:N/I:N/A:C

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2012-2133.md and follow it. Check whether this project is affected by CVE-2012-2133. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record