traps.c in the Linux kernel 2.6.x and 2.4.x executes stack segment faults on an exception stack, which allows local users to cause a denial of service (oops and stack fault exception).
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11101
http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:044
http://www.vupen.com/english/advisories/2005/1878
http://www.ubuntu.com/usn/usn-187-1
http://www.securityfocus.com/bid/14467
http://www.redhat.com/support/errata/RHSA-2005-663.html
http://www.novell.com/linux/security/advisories/2005_44_kernel.html
http://www.debian.org/security/2005/dsa-922
http://www.debian.org/security/2005/dsa-921
http://secunia.com/advisories/18977
http://secunia.com/advisories/18059
http://secunia.com/advisories/18056