Alex Ionescu c9607ffe89 - Fix for Windows Kernel APC Data-Free Local Privilege Escalation Vulnerability (re-initialize the list head after cleaning it, so that the list is circular).
- Optimize KeFlushQueueApc: we can check if the Kernel-Mode APC list is empty without acquiring the lock. If it's empty, we can quit immediately, if not, then we'll acquire and check it again. For user APCs we always need to acquire the lock, though.

svn path=/trunk/; revision=24054
2006-09-11 02:09:13 +00:00
2005-12-13 18:56:49 +00:00
2006-09-09 10:53:28 +00:00
2004-02-06 08:21:52 +00:00
2005-10-02 19:31:30 +00:00
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