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).
kernel.org/git/?p=linux/kernel/git/marcelo/linux-2.4.git%3Ba=commit%3Bh=51e31546a2fc46cb978da2ee0330a6a68f07541e
secunia.com/advisories/17002
secunia.com/advisories/18056
secunia.com/advisories/18059
secunia.com/advisories/18977
www.debian.org/security/2005/dsa-921
www.debian.org/security/2005/dsa-922
www.novell.com/linux/security/advisories/2005_44_kernel.html
www.redhat.com/support/errata/RHSA-2005-663.html
www.securityfocus.com/bid/14467
www.ubuntu.com/usn/usn-187-1
www.vupen.com/english/advisories/2005/1878
wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:044
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11101