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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.
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