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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel KVM pmd_none_or_clear_bad() Bug Lets Local Guest Users Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1027084
SecurityTracker URL:  http://securitytracker.com/id/1027084
CVE Reference:   CVE-2012-1179   (Links to External Site)
Date:  May 22 2012
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 3.3.1
Description:   A vulnerability was reported in the Linux Kernel. A local user on the guest operating system can cause denial of service conditions on the host operating system.

A local privileged user on the guest operating system can exploit a flaw in the KVM pmd_none_or_clear_bad() function to cause the target host operating system to crash.

Impact:   A local user on the guest operating system can cause the target host operating system to crash.
Solution:   The vendor has issued a fix (3.3.1).

The vendor's advisory is available at:

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Access control error

Message History:   None.


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