From 46ea3792ccdc5f0eb400f4a7a3715a3f2e2f1a52 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 17 May 2017 07:16:40 -0700 Subject: [PATCH] sctp: do not inherit ipv6_{mc|ac|fl}_list from parent 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 Reported-by: Andrey Konovalov Tested-by: Andrey Konovalov Signed-off-by: David S. Miller Gbp-Pq: Topic bugfix/all Gbp-Pq: Name sctp-do-not-inherit-ipv6_-mc-ac-fl-_list-from-parent.patch --- net/sctp/ipv6.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index 6a2532dd31c..5c4fd79a6e5 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -666,6 +666,9 @@ 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); -- 2.30.2