Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Wed, 14 May 2014 18:41:14 +0530 (IST)
From: P J P <>
To: oss security list <>
Subject: CVE request Linux kernel: forbid uaddr == uaddr2 in futex_wait_requeue_pi()
 to avoid null dereference


Linux kernel built with the fast userspace mutexes(CONFIG_FUTEX) support is 
vulnerable to a NULL pointer dereference flaw. It could occur when a waiting 
task requests wait to be re-queued from non-PI futex to a PI-aware futex via 

An unprivileged user/program could use this flaw to crash the system kernel 
resulting in DoS.

Upstream fix:

Introduced in:

Thank you.
Prasad J Pandit / Red Hat Security Response Team

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Powered by Openwall GNU/*/Linux - Powered by OpenVZ