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TITLE:
Linux Kernel FASYNC Use-After-Free Privilege Escalation Vulnerability

SECUNIA ADVISORY ID:
SA38199

VERIFY ADVISORY:
http://secunia.com/advisories/38199/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to a use-after-free error within the
handling of file descriptors with the FASYNC flag set. This can be
exploited to e.g. cause a crash or execute arbitrary code with kernel
privileges.

SOLUTION:
Fixed in the GIT repository.
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=53281b6d34d44308372d16acb7fb5327609f68b6

PROVIDED AND/OR DISCOVERED BY:
Tavis Ormandy, Google.

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=log;h=53281b6d34d44308372d16acb7fb5327609f68b6

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