The Virtual Token driver (vdlptokn.sys) 1.0.2.43 in DESlock+ 3.2.7 allows local users to cause a denial of service (system crash) via a crafted IOCTL request to \Device\DLPTokenWalter0.
Microsoft Windows Vista Home and Ultimate Edition SP1 and earlier allows local users to cause a denial of service (page fault and system crash) via multiple attempts to access a virtual address in a PAGE_NOACCESS memory page.