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.”
osvdb.org/73790
secunia.com/advisories/45186
support.avaya.com/css/P8/documents/100144947
www.securitytracker.com/id?1025761
www.us-cert.gov/cas/techalerts/TA11-193A.html
docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12898