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

[ Upstream commit fdcee2c ] SCTP needs fixes similar to 83eadda ("ipv6/dccp: do not inherit ipv6_mc_list from parent"), otherwise bad things can happen. Signed-off-by: Eric Dumazet <[email protected]> Reported-by: Andrey Konovalov <[email protected]> Tested-by: Andrey Konovalov <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
TechNexion · Jun 7, 2017 · 5e7d9f0 · 5e7d9f0
1 parent eb7f6d6
commit 5e7d9f0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
@@ -678,6 +678,9 @@ 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);