Stack-based buffer overflow in kl1.sys in Kaspersky Anti-Virus 6.0 and 7.0 and Internet Security 6.0 and 7.0 allows local users to gain privileges via an IOCTL 0x800520e8 call.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42849
http://www.vupen.com/english/advisories/2008/1739
http://www.kaspersky.com/technews?id=203038727
http://securitytracker.com/id?1020196
http://securitytracker.com/id?1020195
http://secunia.com/advisories/30534
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=704