Memory leak in direct-io.c in Linux kernel 2.6.x before 2.6.10 allows local users to cause a denial of service (memory consumption) via certain O_DIRECT (direct IO) write requests.
http://secunia.com/advisories/21605
http://secunia.com/advisories/22093
http://secunia.com/advisories/22174
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10165
http://support.avaya.com/elmodocs2/security/ASA-2006-203.htm
http://www.debian.org/security/2006/dsa-1184
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.10