avg7core.sys 7.5.0.444 in Grisoft AVG Anti-Virus 7.5.448 and Free Edition 7.5.446, provides an internal function that copies data to an arbitrary address, which allows local users to gain privileges via arbitrary address arguments to a function provided by the 0x5348E004 IOCTL for the generic DeviceIoControl handler.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35345
http://www.vupen.com/english/advisories/2007/2518
http://www.securityfocus.com/bid/24870
http://www.securityfocus.com/archive/1/473360/100/0/threaded
http://securitytracker.com/id?1018362
http://securityreason.com/securityalert/2887