Race condition in run_posix_cpu_timers in Linux kernel before 2.6.16.21 allows local users to cause a denial of service (BUG_ON crash) by causing one CPU to attach a timer to a process that is exiting.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27380
http://www.vupen.com/english/advisories/2006/2451
http://www.ubuntu.com/usn/usn-311-1
http://www.trustix.org/errata/2006/0037
http://www.securityfocus.com/bid/18615
http://www.securityfocus.com/archive/1/438168/100/0/threaded
http://www.novell.com/linux/security/advisories/2006_42_kernel.html
http://www.mandriva.com/security/advisories?name=MDKSA-2006:151
http://www.mandriva.com/security/advisories?name=MDKSA-2006:123
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.21
http://secunia.com/advisories/21179
http://secunia.com/advisories/21045
http://secunia.com/advisories/20991
http://secunia.com/advisories/20831