win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 R2 and Windows 7 does not properly validate user-mode input, which allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12184
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-098