The kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 does not properly handle invalid pointers, which allows local users to gain privileges via an application that triggers use of a crafted pointer, aka "Windows Kernel Invalid Pointer Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5440
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-006
http://www.vupen.com/english/advisories/2009/0659
http://www.us-cert.gov/cas/techalerts/TA09-069A.html
http://www.securitytracker.com/id?1021827
http://www.securityfocus.com/bid/34025
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&DocumentOID=842987&poid=
http://support.avaya.com/elmodocs2/security/ASA-2009-079.htm