Credit is to "Nils Sommer of bytegeist, working with Google Project Zero".

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The attached testcase crashes Windows 7 32-bit due to a pool buffer overflow in an ioctl handler. Enabling special on ndis.sys netio.sys and ntoskrnl helps to track down the issue, however it will crashes due to a bad pool header without special pool as well.
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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.

 

crash_bad_pool_header.txt 50.7 KB View Download

poc.cpp 2.5 KB Download

crash_special_pool.txt 57.6 KB View Download