linux-kernel - Re: [PATCH 9/9] Add explicit bound checks in net/socket.c

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Message-Id: <20090928.125757.151682793.davem@davemloft.net>
Date:	Mon, 28 Sep 2009 12:57:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	arjan@...radead.org
Cc:	gorcunov@...il.com, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, mingo@...e.hu,
	netdev@...r.kernel.org
Subject: Re: [PATCH 9/9] Add explicit bound checks in net/socket.c

From: Arjan van de Ven <arjan@...radead.org>
Date: Sat, 26 Sep 2009 21:23:02 +0200

> The sys_socketcall() function has a very clever system for the copy
> size of its arguments. Unfortunately, gcc cannot deal with this in
> terms of proving that the copy_from_user() is then always in bounds.
> This is the last (well 9th of this series, but last in the kernel) such
> case around.
> 
> With this patch, we can turn on code to make having the boundary provably
> right for the whole kernel, and detect introduction of new security
> accidents of this type early on.
> 
> Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>

Applied, thanks.
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