The Virtual DOS Machine (VDM) in the Windows Kernel in Microsoft Windows NT 4.0; 2000 SP4; XP SP2; Server 2003, 2003 SP1, and 2003 SP2; and Windows Vista before June 2006; uses insecure permissions (PAGE_READWRITE) for a physical memory view, which allows local users to gain privileges by modifying the "zero page" during a race condition before the view is unmapped.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1639
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-022
http://www.vupen.com/english/advisories/2007/1326
http://www.us-cert.gov/cas/techalerts/TA07-100A.html
http://www.securityfocus.com/bid/23367
http://www.securityfocus.com/archive/1/466331/100/200/threaded
http://www.securityfocus.com/archive/1/465232/100/0/threaded
http://www.kb.cert.org/vuls/id/337953
http://securitytracker.com/id?1017898
http://secunia.com/advisories/24834
http://research.eeye.com/html/advisories/published/AD20070410a.html