NULL pointer dereference in Linux kernel - CVE-2011-2203

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Main Vulnerability Database Vulnerabilities #VU44357

NULL pointer dereference in Linux kernel - CVE-2011-2203

Published: January 27, 2012 / Updated: August 11, 2020


Vulnerability identifier: #VU44357
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-2203
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and Oops) by mounting an HFS file system with a malformed MDB extent record. A remote attacker can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)

How to mitigate CVE-2011-2203

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

linux (Ubuntu package) - addressed in versions 2.6.24-30.98, 2.6.32-38.83, 2.6.35-32.64, 2.6.38-13.54, 3.0.0-15.26
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-32.64~lucid1
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-13.54~lucid1
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-15.25~lucid1

External References

Related Security Bulletins