From: David Ahern <dsahern@gmail.com>
To: Leonard Crestez <cdleonard@gmail.com>,
Eric Dumazet <edumazet@google.com>,
David Ahern <dsahern@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Jakub Kicinski <kuba@kernel.org>, Martin KaFai Lau <kafai@fb.com>,
Kuniyuki Iwashima <kuniyu@amazon.co.jp>,
Yonghong Song <yhs@fb.com>,
Alexander Duyck <alexanderduyck@fb.com>,
Florian Westphal <fw@strlen.de>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tcp: md5: Fix overlap between vrf and non-vrf keys
Date: Wed, 6 Oct 2021 19:14:39 -0600 [thread overview]
Message-ID: <209548b5-27d2-2059-f2e9-2148f5a0291b@gmail.com> (raw)
In-Reply-To: <3d8387d499f053dba5cd9184c0f7b8445c4470c6.1633542093.git.cdleonard@gmail.com>
On 10/6/21 11:48 AM, Leonard Crestez wrote:
> @@ -1103,11 +1116,11 @@ static struct tcp_md5sig_key *tcp_md5_do_lookup_exact(const struct sock *sk,
> #endif
> hlist_for_each_entry_rcu(key, &md5sig->head, node,
> lockdep_sock_is_held(sk)) {
> if (key->family != family)
> continue;
> - if (key->l3index && key->l3index != l3index)
> + if (key->l3index != l3index)
That seems like the bug fix there. The L3 reference needs to match for
new key and existing key. I think the same change is needed in
__tcp_md5_do_lookup.
> continue;
> if (!memcmp(&key->addr, addr, size) &&
> key->prefixlen == prefixlen)
> return key;
> }
>
> base-commit: 9cbfc51af026f5b721a1b36cf622ada591b3c5de
>
next prev parent reply other threads:[~2021-10-07 1:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-06 17:48 [PATCH] tcp: md5: Fix overlap between vrf and non-vrf keys Leonard Crestez
2021-10-07 1:14 ` David Ahern [this message]
2021-10-07 6:41 ` Leonard Crestez
2021-10-07 18:27 ` David Ahern
2021-10-08 15:51 ` Leonard Crestez
2021-10-09 17:19 ` David Ahern
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