The kernel in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 does not properly validate ACLs on kernel objects, which allows local users to cause a denial of service (reboot) via a crafted application, aka "Windows Kernel Improper Validation Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11789
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-047