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TITLE:
Linux Kernel "fs/pipe.c" Locking Error NULL Pointer Dereference

SECUNIA ADVISORY ID:
SA37233

VERIFY ADVISORY:
http://secunia.com/advisories/37233/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) and potentially gain escalated privileges.

The vulnerability is caused due to a locking error within the
"pipe_rdwr_open()", "pipe_write_open()", and "pipe_read_open()"
functions in fs/pipe.c. This can be exploited to cause a NULL pointer
deference by performing certain pipe operations.

SOLUTION:
Fixed in version 2.6.32-rc6.

PROVIDED AND/OR DISCOVERED BY:
Earl Chew

ORIGINAL ADVISORY:
http://bugzilla.kernel.org/show_bug.cgi?id=14416

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ad3960243e55320d74195fb85c975e0a8cc4466c

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