64 bit Windows 7 security bug

Microsoft on Tuesday warned users of a vulnerability in 64-bit versions of Windows 7 and Windows Server 2008 R2 that could expose users to malware attacks.

Exploitation of the bug in the Canonical Display Driver would most likely only cause vulnerable machines to reboot, Microsoft spokesman Jerry Bryant said in a blog post. But it could also be abused to silently install malware, although attackers would first have to bypass memory randomization protections baked in to the operating systems to prevent code execution attacks, he added.