tree 942709ba5115ae7840efc3d71b6093de4b39e575
parent 4c4ed0748f82e26d8b884383e6737cf5a861ed6f
author Florian Westphal <fw@strlen.de> 1429526147 +0200
committer Pablo Neira Ayuso <pablo@netfilter.org> 1429901500 +0200

netfilter: bridge: fix NULL deref in physin/out ifindex helpers

Might not have an outdev yet. We'll oops when iface goes down while skbs
are still nfqueue'd:

RIP: 0010:[<ffffffff81422a2f>]  [<ffffffff81422a2f>] dev_cmp+0x4f/0x80
nfqnl_rcv_dev_event+0xe2/0x150
notifier_call_chain+0x53/0xa0

Fixes: c737b7c4510026 ("netfilter: bridge: add helpers for fetching physin/outdev")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>