netdev - Re: [PATCH net] inet: fix IP(V6)_RECVORIGDSTADDR for udp sockets

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Message-Id: <20161223.121938.1965120330531794672.davem@davemloft.net>
Date:   Fri, 23 Dec 2016 12:19:38 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     willemdebruijn.kernel@...il.com
Cc:     netdev@...r.kernel.org, njagabar@...udmark.com,
        samanthakumar@...gle.com, willemb@...gle.com
Subject: Re: [PATCH net] inet: fix IP(V6)_RECVORIGDSTADDR for udp sockets

From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
Date: Thu, 22 Dec 2016 18:19:16 -0500

> From: Willem de Bruijn <willemb@...gle.com>
> 
> Socket cmsg IP(V6)_RECVORIGDSTADDR checks that port range lies within
> the packet. For sockets that have transport headers pulled, transport
> offset can be negative. Use signed comparison to avoid overflow.
> 
> Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
> Reported-by: Nisar Jagabar <njagabar@...udmark.com>
> Signed-off-by: Willem de Bruijn <willemb@...gle.com>

Applied and queued up for -stable.