78301 : Linux Kernel NSF O_Direct Implementation Local DoS
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Timeline

Disclosure Date
2009-09-13

Description

Linux Kernel contains a flaw in the NFS implementation that may allow a local denial of service. The issue is due to the NFS O_DIRECT implementation not properly initializing various data when calling certain functions. With a specially crafted request, a local attacker can cause a kernel panic.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Upgrade, Third-Party Solution
Exploit: Exploit Unknown
Disclosure: Vendor Verified, Third-party Verified, Coordinated Disclosure
OSVDB: Authentication Required

Solution

It has been reported that this issue has been fixed. Upgrade to version 2.6.31-rc6, or higher, to address this vulnerability.

Products

Linux Kernel Organization, Inc.

Kernel

2.6.31-rc5

References

CVE ID: 2011-4325 (see also: NVD)
Secunia Advisory ID: 36617 47512 48140 50476 53578
SCIP VulDB ID: 4543
Bugtraq ID: 51366
ISS X-Force ID: 72297
Vendor Specific News/Changelog Entry: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=1ae88b2e4
http://wiki.openvz.org/Download/kernel/rhel5/028stab098.1
https://bugzilla.redhat.com/show_bug.cgi?id=755455
Other Advisory URL: http://lwn.net/Articles/347068/
Vendor URL: http://www.kernel.org/
Vendor Specific Advisory URL: http://www.vmware.com/security/advisories/VMSA-2012-0013.html
https://downloads.avaya.com/css/P8/documents/100159076
RedHat RHSA: RHSA-2012:0007

Credit

Catalin Marinas

CVSSv2 Score

CVSSv2 Base Score = 4.9
Source: nvd.nist.gov | Generated: 2012-01-30 | Disagree?

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