Race condition in Linux kernel - CVE-2012-4508

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Main Vulnerability Database Vulnerabilities #VU43236

Race condition in Linux kernel - CVE-2012-4508

Published: December 21, 2012 / Updated: August 11, 2020


Vulnerability identifier: #VU43236
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-4508
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Race condition in fs/ext4/extents.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from a deleted file by reading an extent that was not properly marked as uninitialized.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
linux-lts-quantal (Ubuntu package)

How to mitigate CVE-2012-4508

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 2.6.32-49.111, 3.0.0-31.48, 3.2.0-34.53, 3.5.0-21.32
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-31.48~lucid1
linux-lts-quantal (Ubuntu package) - update to 3.5.0-22.34~precise1

External References

Related Security Bulletins