Resource management error in Linux kernel - CVE-2012-2133

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Main Vulnerability Database Vulnerabilities #VU43918

Resource management error in Linux kernel - CVE-2012-2133

Published: July 3, 2012 / Updated: August 11, 2020


Vulnerability identifier: #VU43918
CSH Severity: Medium
CVSS v4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-2133
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

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 software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-345-ec2 (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)

How to mitigate CVE-2012-2133

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 2.6.32-41.90, 2.6.38-15.60, 3.0.0-21.35, 3.2.0-25.40
linux-image-2.6.32-345-ec2 (Ubuntu package) - update to 2.6.32-345.49
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-15.60~lucid1
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-21.35~lucid1

External References

Related Security Bulletins