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

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Message-Id: <20120607.131036.454649403537424443.davem@davemloft.net>
Date:	Thu, 07 Jun 2012 13:10:36 -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: Wed,  6 Jun 2012 23:32:02 +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>

This limit is arbitrary, I'm not applying a patch like this.

Use the actual limit, which is either the protocol limit or something
like the device mtu.
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