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Date: Thu, 12 Oct 2017 14:47:14 +1000
From: Wade Mealing <>
Subject: CVE-2017-12192 kernel: NULL pointer dereference due to KEYCTL_READ on negative key


A vulnerability in the Key Management sub component was found in the Linux
kernel. Trying to KEYTCL_READ on negative key would lead to a NULL pointer
dereference. A local attacker could use this flaw to crash the kernel.

It looks as though the read primitive is limited to a fixed address so this
has very limited use as an arbitrary read primitive to leverage for another

Fixed by:

Introduced by:

Wade Mealing

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