linux-kernel - [PATCH 4.9 18/34] dccp: do not leak jiffies on the wire

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Message-Id: <20191108174638.029422308@linuxfoundation.org>
Date:   Fri,  8 Nov 2019 19:50:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        Thiemo Nagel <tnagel@...gle.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.9 18/34] dccp: do not leak jiffies on the wire

From: Eric Dumazet <edumazet@...gle.com>

[ Upstream commit 3d1e5039f5f87a8731202ceca08764ee7cb010d3 ]

For some reason I missed the case of DCCP passive
flows in my previous patch.

Fixes: a904a0693c18 ("inet: stop leaking jiffies on the wire")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Reported-by: Thiemo Nagel <tnagel@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/dccp/ipv4.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -417,7 +417,7 @@ struct sock *dccp_v4_request_recv_sock(c
 	RCU_INIT_POINTER(newinet->inet_opt, rcu_dereference(ireq->ireq_opt));
 	newinet->mc_index  = inet_iif(skb);
 	newinet->mc_ttl	   = ip_hdr(skb)->ttl;
-	newinet->inet_id   = jiffies;
+	newinet->inet_id   = prandom_u32();
 
 	if (dst == NULL && (dst = inet_csk_route_child_sock(sk, newsk, req)) == NULL)
 		goto put_and_exit;