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Date: Thu, 08 Dec 2011 12:19:29 -0700
From: Kurt Seifried <>
Subject: Re: CVE Request -- kernel: send(m)msg: user pointer

On 12/08/2011 12:15 PM, Petr Matousek wrote:
> Dereferencing a user pointer directly from kernel-space without going
> through the copy_from_user family of functions is a bad idea. Two of
> such usages can be found in the sendmsg code path called from
> sendmmsg, added by upstream commit
> c71d8ebe7a4496fb7231151cb70a6baa0cb56f9a. Usages are performed through
> memcmp() and memcpy() directly. 
> Upstream commit:
> bc909d9ddbf7778371e36a651d6e4194b1cc7d4c
> References:
> Thanks,
Please use CVE-2011-4594 for this issue.


-Kurt Seifried / Red Hat Security Response Team

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