linux-kernel - Re: [PATCH] ieee802154: verify packet size before trying to allocate it

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Message-Id: <20120610.200443.971015025499077057.davem@davemloft.net>
Date:	Sun, 10 Jun 2012 20:04:43 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	levinsasha928@...il.com
Cc:	dbaryshkov@...il.com, slapin@...fans.org,
	linux-zigbee-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ieee802154: verify packet size before trying to
 allocate it

From: Sasha Levin <levinsasha928@...il.com>
Date: Sun, 10 Jun 2012 13:10:19 +0200

> Currently when sending data over datagram, the send function will attempt to
> allocate any size passed on from the userspace.
> 
> We should make sure that this size is checked and limited. The maximum size
> of an IP packet seemed like the safest limit here.
> 
> Signed-off-by: Sasha Levin <levinsasha928@...il.com>

Why not limit to the device MTU?  That's exactly what I suggested
to you.
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