b835eeb4ec1dd122b6feff2b70881265c529fcdd
MemoryDenyWriteExecution policy could be be bypassed by using pkey_mprotect instead of mprotect to create an executable writable mapping. The impact is mitigated by the fact that the man page says "Note that this feature is fully available on x86-64, and partially on x86", so hopefully people do not rely on it as a sole security measure. Found by Karin Hossen and Thomas Imbert from Sogeti ESEC R&D. https://bugs.launchpad.net/bugs/1725348
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