CVE-2012-6647 Information

Description

The futex_wait_requeue_pi function in kernel/futex.c in the Linux kernel before 3.5.1 does not ensure that calls have two different futex addresses which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted FUTEX_WAIT_REQUEUE_PI command.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f7b0a2a5c0fb03be7c25bd1745baa50582348ef http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.1 http://www.openwall.com/lists/oss-security/2014/05/14/9 https://bugzilla.redhat.com/show_bug.cgi?id=1097746 https://github.com/torvalds/linux/commit/6f7b0a2a5c0fb03be7c25bd1745baa50582348ef