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

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Date:   Fri, 14 Apr 2017 23:44:15 +0200
From:   Hannes Frederic Sowa <hannes@...essinduktion.org>
To:     Florian Westphal <fw@...len.de>, netdev@...r.kernel.org
Subject: Re: [PATCH net] ipv6: drop non loopback packets claiming to originate
 from ::1

On Fri, Apr 14, 2017, at 20:22, Florian Westphal wrote:
> 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>

Acked-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

Thanks!