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CVE Database

CVE-2010-0727

Impact: Moderate
Public: 2010-03-11
Bugzilla: 570863: CVE-2010-0727 kernel: bug in GFS/GFS2 locking code leads to dos

Details

The MITRE CVE dictionary describes this issue as:

The gfs2_lock function in the Linux kernel before 2.6.34-rc1-next-20100312, and the gfs_lock function in the Linux kernel on Red Hat Enterprise Linux (RHEL) 5 and 6, does not properly remove POSIX locks on files that are setgid without group-execute permission, which allows local users to cause a denial of service (BUG and system crash) by locking a file on a (1) GFS or (2) GFS2 filesystem, and then changing this file's permissions.

Find out more about CVE-2010-0727 from the MITRE CVE dictionary and NIST NVD.

Statement

Red Hat is aware of this issue and is tracking it via the following bug:
https://bugzilla.redhat.com/CVE-2010-0727.

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise MRG, as it did not include support for the GFS and GFS2 file systems.

For the GFS issue, it was addressed in Red Hat Enterprise Linux 3 in the gfs package, 4 in the GFS-kernel package, and 5 in the gfs-kmod package, via https://rhn.redhat.com/errata/RHSA-2010-9493.html, https://rhn.redhat.com/errata/RHSA-2010-9494.html, https://rhn.redhat.com/errata/RHSA-2010-0291.html respectively.

For the GFS2 issue, it was addressed in Red Hat Enterprise Linux 5 in the kernel package via https://rhn.redhat.com/errata/RHSA-2010-0178.html.

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
RHEL Cluster-Storage (v. 5.4.Z server) (gfs-kmod) RHSA-2010:0521 July 08, 2010
RHEL Cluster-Storage version 5 (gfs-kmod) RHSA-2010:0291 March 29, 2010
Red Hat Enterprise Linux EUS (v. 5.4 server) (kernel) RHSA-2010:0380 April 27, 2010
Red Hat Enterprise Linux version 5 (kernel) RHSA-2010:0178 March 29, 2010
Red Hat Global File System 3AS (GFS) RHSA-2010:0330 March 30, 2010
Red Hat Global File System 4AS (GFS-kernel) RHSA-2010:0331 March 30, 2010

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.