Possible privilege escalation issue due to lack of mutex locking around places where perf_event::ctx is being changed. Upstream patch: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b
Statement: This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG-2 as the flaw was already fixed in the products listed.