The fix below is claimed to fix this issue:
commit 9d55b9923a1b7ea8193b8875c57ec940dc2ff027
Author: Thomas Gleixner <t...@linutronix.de>
Date: Fri Feb 1 17:45:14 2008 +0100
x86: replace LOCK_PREFIX in futex.h
The exception fixup for the futex macros __futex_atomic_op1/2 and
futex_atomic_cmpxchg_inatomic() is missing an entry when the lock
prefix is replaced by a NOP via SMP alternatives.
Chuck Ebert tracked this down from the information provided in:
https://bugzilla.redhat.com/show_bug.cgi?id=429412
A possible solution would be to add another fixup after the
LOCK_PREFIX, so both the LOCK and NOP case have their own entry in the
exception table, but it's not really worth the trouble.
Simply replace LOCK_PREFIX with lock and keep those untouched by SMP
alternatives.
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Ingo Molnar <mi...@elte.hu>
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https://bugs.launchpad.net/bugs/706060
Title:
CVE-2010-3086
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