netdev - Re: [PATCH 1/4] NET: AX.25: Check ioctl arguments to avoid overflows further down the road.

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Message-Id: <20111129.011755.811907405309581515.davem@davemloft.net>
Date:	Tue, 29 Nov 2011 01:17:55 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	ralf@...ux-mips.org
Cc:	netdev@...r.kernel.org, linux-hams@...r.kernel.org,
	xi.wang@...il.com, jreuter@...na.de, alan@...rguk.ukuu.org.uk,
	thomas@...erried.de
Subject: Re: [PATCH 1/4] NET: AX.25: Check ioctl arguments to avoid
 overflows further down the road.

From: Ralf Baechle <ralf@...ux-mips.org>
Date: Thu, 24 Nov 2011 16:12:59 +0000

> Very large, nonsenical arguments or use in very extreme conditions could
> result in integer overflows.  Check ioctls arguments to avoid such
> overflows and return -EINVAL for too large arguments.
> 
> To allow the use of AX.25 for even the most extreme setup (think packet
> radio to the Phase 5E mars probe) we make no further attempt to clamp the
> argument range.
> 
> Originally reported by Fan Long <longfancn@...il.com> and a first patch
> was sent by Xi Wang <xi.wang@...il.com>.
> 
> Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>

Applied.
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