sctp: do not inherit ipv6_{mc|ac|fl}_list from parent

commit fdcee2cbb8438702ea1b328fb6e0ac5e9a40c7f8 upstream.

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 <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 428fa6f69bd89cd742d2b84ce0255a16f553d6af..762b61d84ac1426c49a4038e4ad871b21ba7006a 100644 (file)
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -655,6 +655,9 @@ 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);