win32k.sys in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2 Windows Server 2008 Gold SP2 R2 and R2 SP1 and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference a different vulnerability than other CVEs listed in MS11-054 aka \Win32k Null Pointer De-reference Vulnerability.\