From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Florian Westphal <fw@strlen.de>
Cc: Eric Dumazet <edumazet@google.com>,
Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
netfilter-devel@vger.kernel.org, netdev <netdev@vger.kernel.org>,
Eric Dumazet <eric.dumazet@gmail.com>,
syzbot <syzkaller@googlegroups.com>
Subject: Re: [PATCH netfilter] netfilter: bridge: make sure to pull arp header in br_nf_forward_arp()
Date: Mon, 9 Dec 2019 12:58:06 +0100 [thread overview]
Message-ID: <20191209115806.6shehffmjvlazdd2@salvia> (raw)
In-Reply-To: <20191208233155.GH795@breakpoint.cc>
On Mon, Dec 09, 2019 at 12:31:55AM +0100, Florian Westphal wrote:
> Eric Dumazet <edumazet@google.com> wrote:
[...]
> > nf_bridge_pull_encap_header(skb);
> > }
> >
> > + if (unlikely(!pskb_may_pull(skb, sizeof(struct arphdr))))
> > + return NF_DROP;
> > +
> > if (arp_hdr(skb)->ar_pln != 4) {
>
> Thats indeed the only location where we call NFPROTO_ARP hooks,
> so this looks like the proper fix/location.
Applied, thanks Eric, and thanks Florian for reviewing.
prev parent reply other threads:[~2019-12-09 11:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-07 22:43 [PATCH netfilter] netfilter: bridge: make sure to pull arp header in br_nf_forward_arp() Eric Dumazet
2019-12-08 23:31 ` Florian Westphal
2019-12-09 11:58 ` Pablo Neira Ayuso [this message]
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