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tcp: md5: release request socket instead of listener

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[ Upstream commit 729235554d ]

If tcp_v4_inbound_md5_hash() returns an error, we must release
the refcount on the request socket, not on the listener.

The bug was added for IPv4 only.

Fixes: 079096f103 ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Dumazet
2016-02-11 22:50:29 -08:00
committed by Greg Kroah-Hartman
parent 692925fe2d
commit a4b84d5efb
1 changed files with 4 additions and 2 deletions
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6
net/ipv4/tcp_ipv4.c
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@@ -1597,8 +1597,10 @@ process:
struct sock *nsk = NULL;
sk = req->rsk_listener;
if (tcp_v4_inbound_md5_hash(sk, skb))
goto discard_and_relse;
if (unlikely(tcp_v4_inbound_md5_hash(sk, skb))) {
reqsk_put(req);
goto discard_it;
}
if (likely(sk->sk_state == TCP_LISTEN)) {
nsk = tcp_check_req(sk, skb, req, false);
} else {