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Re: CVE-2011-4110 kernel: keys: NULL pointer deref in the user-defined key type


From: Kurt Seifried <kseifried () redhat com>
Date: Mon, 21 Nov 2011 14:26:29 -0700

On 11/21/2011 10:51 AM, Petr Matousek wrote:
There is a NULL pointer deref in the user-defined key type whereby
updating a negative key into a fully instantiated key will cause
an oops to occur when the code attempts to free the non-existent
old payload.

Upstream commit:
9f35a33b8d06263a165efe3541d9aa0cdbd70b3b

References:
https://lkml.org/lkml/2011/11/15/363
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4110

Thanks,
Please use CVE-2011-4331 for this issue.

-- 

-Kurt Seifried / Red Hat Security Response Team


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