NULL pointer dereference in Linux kernel - CVE-2013-1792

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Main Vulnerability Database Vulnerabilities #VU42963

NULL pointer dereference in Linux kernel - CVE-2013-1792

Published: March 22, 2013 / Updated: August 11, 2020


Vulnerability identifier: #VU42963
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-1792
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. A remote attacker can trigger denial of service conditions via crafted keyctl system calls that trigger keyring operations in simultaneous threads.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-351-ec2 (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
linux-lts-quantal (Ubuntu package)

How to mitigate CVE-2013-1792

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

linux (Ubuntu package) - addressed in versions 2.6.32-46.107, 3.0.0-32.51, 3.2.0-40.64, 3.5.0-27.46
linux-image-2.6.32-351-ec2 (Ubuntu package) - update to 2.6.32-351.63
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-32.51~lucid1
linux-lts-quantal (Ubuntu package) - update to 3.5.0-27.46~precise1

External References

Related Security Bulletins