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Date: Tue, 8 Mar 2011 15:07:30 +0100
From: Tomas Hoger <thoger@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request, php's shm
On Tue, 8 Mar 2011 14:36:49 +0100 Pierre Joye wrote:
> This flaw has been discovered by Jose Carlos Norte, already fixed in
> SVN by Felipe Pena (felipe@....net), see
> http://svn.php.net/viewvc/?view=revision&revision=309018
It may be more readable to use the check as:
if (count < 0 || count > shmop->size - size)
Previous size check gives you guarantees regarding shmop->size - size
result.
Just my 2c.
--
Tomas Hoger / Red Hat Security Response Team
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