NULL pointer dereference in Linux kernel - CVE-2013-1819

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Main Vulnerability Database Vulnerabilities #VU43026

NULL pointer dereference in Linux kernel - CVE-2013-1819

Published: March 7, 2013 / Updated: August 11, 2020


Vulnerability identifier: #VU43026
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-1819
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 fs/xfs/xfs_buf.c in the Linux kernel before 3.7.6 does not validate block numbers, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging the ability to mount an XFS filesystem containing a metadata inode with an invalid extent map. A remote attacker can perform a denial of service (DoS) attack.


Affected software

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

How to mitigate CVE-2013-1819

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

linux (Ubuntu package) - addressed in versions 3.2.0-54.82, 3.5.0-41.64
linux-lts-quantal (Ubuntu package) - update to 3.5.0-41.64~precise1

External References

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