BSOD in Win'2k3, Vista x86 and x64 by nonpriviledged user
BSOD or hard system hang due to race condition in win32k. sys code that
processes UnhookWindowsHookEx. Reproduced when thread calls many times
UnhookWindowsHookEx in the same time with switching active windows desktop
object (SwitchDesktop) from desktop where hooks are unhooked and broadcasting
windows messages to windows on that desktop. Sample exploit code can be
downloaded from: http://killprog.com/whk.zip Works on Win'2k3 and Vista. XP
seems to be immune to this.