CVE Database


Impact: Moderate
Public: 2011-06-03
Bugzilla: 722557: CVE-2011-2695 kernel: ext4: kernel panic when writing data to the last block of sparse file


The MITRE CVE dictionary describes this issue as:

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.

Find out more about CVE-2011-2695 from the MITRE CVE dictionary and NIST NVD.


This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via,, and This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not include support for EXT4 filesystem.

CVSS v2 metrics

Base Score: 4.9
Base Metrics: AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector: Local
Access Complexity: Low
Authentication: None
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-2011:1253 September 12, 2011
Red Hat Enterprise Linux version 5 (kernel) RHSA-2011:1386 October 20, 2011
Red Hat Enterprise Linux version 6 (kernel) RHSA-2011:1189 August 23, 2011

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.