Source: https://code.google.com/p/google-security-research/issues/detail?id=516

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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Proof of Concept:
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/38793.zip