73802 : Linux Kernel fs/gfs2/file.c GFS2 gfs2_fallocate() Function Local DoS
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Timeline

Disclosure Date
2011-04-26

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2011-2689" target="_blank">CVE</a>)</em> : The gfs2_fallocate function in fs/gfs2/file.c in the Linux kernel before 3.0-rc1 does not ensure that the size of a chunk allocation is a multiple of the block size, which allows local users to cause a denial of service (BUG and system crash) by arranging for all resource groups to have too little free space.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Patch / RCS
Disclosure: Vendor Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Benjamin Marzinski has released a patch to address this vulnerability.

Products

Unknown or Incomplete

References

Security Tracker: 1025776
CVE ID: 2011-2689 (see also: NVD)
Secunia Advisory ID: 45193 45328 45746 45889 46060 46824 47758
Bugtraq ID: 48677
ISS X-Force ID: 68557
Vendor Specific News/Changelog Entry: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6905d9e4dda6112f007e9090bca80507da158e63
http://wiki.openvz.org/Download/kernel/rhel6/042stab037.1
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc1
http://www.ubuntu.com/usn/usn-1256-1/
https://bugzilla.redhat.com/show_bug.cgi?id=720861
Other Advisory URL: http://wiki.openvz.org/Download/kernel/rhel5/028stab093.2
http://www.openwall.com/lists/oss-security/2011/07/13/1
Vendor Specific Advisory URL: http://www.vmware.com/security/advisories/VMSA-2012-0001.html
RedHat RHSA: https://rhn.redhat.com/errata/RHSA-2011-1065.html
https://rhn.redhat.com/errata/RHSA-2011-1189.html

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 4.9
Source: nvd.nist.gov | Generated: 2011-07-29 | Disagree?

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