Subject: [PATCH 14/41] sctp: do not inherit ipv6_{mc|ac|fl}_list from parent

From: Eric Dumazet <[email-masked]>
Date: Wed, 17 May 2017 07:16:40 -0700

[ Upstream commit fdcee2cbb8438702ea1b328fb6e0ac5e9a40c7f8 ]

SCTP needs fixes similar to 83eaddab4378 ("ipv6/dccp: do not inherit
ipv6_mc_list from parent"), otherwise bad things can happen.

Signed-off-by: Eric Dumazet <[email-masked]>
Reported-by: Andrey Konovalov <[email-masked]>
Tested-by: Andrey Konovalov <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
---
 net/sctp/ipv6.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 142b70e..f5b45b8 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -677,6 +677,9 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
 	newnp = inet6_sk(newsk);
 
 	memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+	newnp->ipv6_mc_list = NULL;
+	newnp->ipv6_ac_list = NULL;
+	newnp->ipv6_fl_list = NULL;
 
 	rcu_read_lock();
 	opt = rcu_dereference(np->opt);
-- 
2.4.11