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Windows race condition leading to use after free ​in DestroySMWP #509

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Credit is to "Nils Sommer of bytegeist, working with Google Project Zero".

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The attached testcase crashes Window 7 32-bit with Special Pool enabled on 
win32k.sys due to a use-after-free condition. The bug appears to be a race 
condition between two threads and multiple runs on the PoC might be required to 
trigger the bug. This is more reliable on systems with multiple cores.

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This bug is subject to a 90 day disclosure deadline. If 90 days elapse
without a broadly available patch, then the bug report will automatically
become visible to the public.

Original issue reported on code.google.com by haw...@google.com on 27 Aug 2015 at 6:00

Attachments:

GoogleCodeExporter commented 8 years ago

Original comment by haw...@google.com on 27 Aug 2015 at 6:01

GoogleCodeExporter commented 8 years ago 
Fixed in MS15-115

Original comment by haw...@google.com on 20 Nov 2015 at 7:29