linux-kernel - Re: [PATCH] DCCP: proper optlen checking in do_dccp

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Message-Id: <20070328.115943.03111877.davem@davemloft.net>
Date:	Wed, 28 Mar 2007 11:59:43 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jkosina@...e.cz
Cc:	akpm@...ux-foundation.org, acme@...driva.com, jagger@...ecki.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] DCCP: proper optlen checking in do_dccp_getsockopt()

From: Jiri Kosina <jkosina@...e.cz>
Date: Wed, 28 Mar 2007 20:49:32 +0200 (CEST)

> From: Jiri Kosina <jkosina@...e.cz>
> 
> DCCP: proper optlen checking in do_dccp_getsockopt()
> 
> Robert Swiecki discovered [1] a signedness bug in checking of
> optlen in do_dccp_getsockopt(). This bug can allow user to
> read parts of the kernel memory.
> 
> [1] http://www.securityfocus.com/archive/1/463934/30/0/threaded

Arnaldo already sent me a more proper fix for this.
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