netdev - Re: [PATCH net] ipv6: drop non loopback packets claiming to originate from ::1

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Message-Id: <20170417.150957.2155713098994217559.davem@davemloft.net>
Date:   Mon, 17 Apr 2017 15:09:57 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     fw@...len.de
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net] ipv6: drop non loopback packets claiming to
 originate from ::1

From: Florian Westphal <fw@...len.de>
Date: Fri, 14 Apr 2017 20:22:43 +0200

> We lack a saddr check for ::1. This causes security issues e.g. with acls
> permitting connections from ::1 because of assumption that these originate
> from local machine.
> 
> Assuming a source address of ::1 is local seems reasonable.
> RFC4291 doesn't allow such a source address either, so drop such packets.
> 
> Reported-by: Eric Dumazet <edumazet@...gle.com>
> Signed-off-by: Florian Westphal <fw@...len.de>

Applied, thanks Florian.