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Message-ID: <ZGZbFD4Xhui5mjd1@corigine.com> Date: Thu, 18 May 2023 19:06:28 +0200 From: Simon Horman <simon.horman@...igine.com> To: Eric Dumazet <edumazet@...gle.com> Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Alexander Aring <alex.aring@...il.com>, David Lebrun <david.lebrun@...ouvain.be>, netdev@...r.kernel.org, eric.dumazet@...il.com Subject: Re: [PATCH net 2/3] ipv6: exthdrs: avoid potential NULL deref in ipv6_srh_rcv() On Wed, May 17, 2023 at 09:31:17PM +0000, Eric Dumazet wrote: > There is some chance __in6_dev_get() returns NULL, we should > not crash if that happens. > > ipv6_srh_rcv() caller (ipv6_rthdr_rcv()) correctly deals with > a NULL idev, we can use the same idea. > > Same problem was later added in ipv6_rpl_srh_rcv(), > this is handled in a separate patch to ease stable backports. > > Fixes: 1ababeba4a21 ("ipv6: implement dataplane support for rthdr type 4 (Segment Routing Header)") > Signed-off-by: Eric Dumazet <edumazet@...gle.com> > Cc: David Lebrun <david.lebrun@...ouvain.be> > Cc: Alexander Aring <alex.aring@...il.com> Reviewed-by: Simon Horman <simon.horman@...igine.com>
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