The ext3fs_dirhash function in Linux kernel 2.6.x allows local users to cause a denial of service (crash) via an ext3 stream with malformed data structures.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10992
http://www.vupen.com/english/advisories/2006/4458
http://www.ubuntu.com/usn/usn-416-1
http://www.securityfocus.com/archive/1/471457
http://www.novell.com/linux/security/advisories/2006_79_kernel.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:060
http://www.mandriva.com/security/advisories?name=MDKSA-2007:040
http://www.debian.org/security/2008/dsa-1503
http://www.debian.org/security/2007/dsa-1304
http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm
http://secunia.com/advisories/29058
http://secunia.com/advisories/25714
http://secunia.com/advisories/25691
http://secunia.com/advisories/24482
http://secunia.com/advisories/24206
http://secunia.com/advisories/24100
http://secunia.com/advisories/24098
http://secunia.com/advisories/23997
http://secunia.com/advisories/23474