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Issue 508
Starred by 1 user
Status: WontFix
Owner:
hawkes@google.com
Closed: Nov 2015
Cc:
█ nils.som...@gmail.com
project-...@google.com



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 Windows kernel NtUserScrollDC memory corruption
Project Member Reported by hawkes@google.com, Aug 21 2015 Back to list 
Credit is to "Nils Sommer of bytegeist, working with Google Project Zero".

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The attached testcases crashes Windows 7 x86 with Special Pool enabled on win32k. The crash occurs while accessing unmapped memory. The bogus address is returned by a call to _FastWindowFromDC​. This is likely to be a freed window object.
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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.
poc.cpp
1.0 KB Download
debugger.txt
54.4 KB View Download
Project Member Comment 1 by hawkes@google.com, Aug 21 2015
Labels: MSRC-30960
Project Member Comment 2 by hawkes@google.com, Nov 20 2015
Labels: -Restrict-View-Commit
Status: WontFix
From Microsoft: "Our investigations indicate that this is not an exploitable UAF and hits the bar for a next version fix. We have opened a bug in the next version of the product for the core team to evaluate."
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