63098 : Linux Kernel gfs_lock Function GFS / GFS2 Filesystem POSIX Lock Removal Weakness Local DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	311	about 1 year ago	about 1 year ago	2 times	100%

Timeline

Discovery Date	Vendor Informed Date	Third Party Solution Date	Disclosure Date	Vendor Ack Date
2010-03-05	2010-03-05	2010-03-08	2010-03-11	2010-03-17

Time to Vendor Response
12 days

Keywords

REDHAT:RHBA-2007-0304, Red Hat Bugzilla: Bugs 218777, 570863

Description

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, contain a flaw that may allow a local denial of service. The issue is triggered when local users lock a file on a GFS or GFS file system and changes this file's permission, which will result in loss of availability for the platform.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Patch / RCS, Third-Party Solution
Exploit: Exploit Rumored
Disclosure: Vendor Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Sachin Prabhu and Steven Whitehouse have released unofficial patches to these vulnerabilities.

As with all third-party solutions, ensure they come from a reliable source and are permitted under your company's security policy.

Products

Linux	Kernel	2.6.10x
		2.6.7.x
		2.6.10.*
		2.6.6.x
		2.6.9.*
		2.6.20.x
		2.6.x
		2.6.5.x
		2.6.8.*
		2.6.19.x
		2.6.4.x
		2.6.7.*
		2.6.18.x
		2.6.10.x
		2.6.3.x
		2.6.6.*
		2.6.17.x
		2.6.11.x
		2.6.2.x
		2.6.5.*
		2.6.12.x
		2.6.1.x
		2.6.15.*
		2.6.4.*
		2.6.13.x
		2.6.14.*
		2.6.3.*
		2.6.13x
		2.6.14.x
		2.6.13.*
		2.6.2.*
		2.6.12x
		2.6.9.x
		2.6.12.*
		2.6.1.*
		2.6.11x
		2.6.8.x
		2.6.11.*

Red Hat	Enterprise	5
		6

References

CVE ID: 2007-6733 (see also: NVD) 2010-0727 (see also: NVD)
Secunia Advisory ID: 39230 39830 40012 41220
Vendor Specific News/Changelog Entry: http://lists.debian.org/debian-security-announce/2010/msg00096.html
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00001.html
https://bugzilla.redhat.com/show_bug.cgi?id=218777
https://bugzilla.redhat.com/show_bug.cgi?id=570863
https://lists.ubuntu.com/archives/ubuntu-security-announce/2010-June/001099.html
Other Advisory URL: http://lkml.org/lkml/2010/3/11/269
http://www.openwall.com/lists/oss-security/2010/03/12/1
RedHat RHSA: http://rhn.redhat.com/errata/RHBA-2007-0304.html
https://rhn.redhat.com/errata/RHSA-2010-0178.html

Credit

ASANO Masahiro

CVSSv2 Score

CVSSv2 Base Score = 4.7
Source: nvd.nist.gov | Generated: 2010-03-17 | Disagree? | There are 1 more: View All

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

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