Public Date:
918009: CVE-2013-1819 kernel: xfs: _xfs_buf_find oops on blocks beyond the filesystem end

The MITRE CVE dictionary describes this issue as:

The _xfs_buf_find function 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.

Find out more about CVE-2013-1819 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5. This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Due to it's limited impact, this issue is not currently planned to be addressed in Red Hat Enterprise Linux 6.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 3.8
Base Metrics AV:L/AC:H/Au:S/C:N/I:N/A:C
Access Vector Local
Access Complexity High
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2013:0829 2013-05-20

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 kernel Will not fix
Red Hat Enterprise Linux 5 kernel Not affected