CVE-2015-6856
Dell Pre-Boot Authentication Driver (PBADRV.sys) 1.0.1.5 allows local users to write to arbitrary physical memory locations and gain privileges via a 0x0022201c IOCTL call.
Date published : 2016-01-08
http://www.securityfocus.com/bid/79643
http://www.securityfocus.com/archive/1/537161/100/0/threaded