A locking problem in POSIX timer cleanup handling on exit in Linux kernel 2.6.10 to 2.6.14, when running on SMP systems, allows local users to cause a denial of service (deadlock) involving process CPU timers.
http://www.securityfocus.com/bid/15722
http://www.securityfocus.com/archive/1/427981/100/0/threaded
http://www.securityfocus.com/archive/1/419522/100/0/threaded
http://www.securityfocus.com/advisories/9806
http://www.mandriva.com/security/advisories?name=MDKSA-2006:018
http://secunia.com/advisories/18203
http://secunia.com/advisories/17918