Symantec symtdi.sys before 7.0.0, as distributed in Symantec AntiVirus Corporate Edition 9 through 10.1 and Client Security 2.0 through 3.1, Norton AntiSpam 2005, and Norton AntiVirus, Internet Security, Personal Firewall, and System Works 2005 and 2006; allows local users to gain privileges via a crafted Interrupt Request Packet (Irp) in an IOCTL 0x83022323 request to \\symTDI\, which results in memory overwrite.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35347
http://www.vupen.com/english/advisories/2007/2507
http://securitytracker.com/id?1018372
http://securityresponse.symantec.com/avcenter/security/Content/2007.07.11d.html
http://secunia.com/advisories/26042
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=554