UPSTREAM: 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 <[email protected]> Reported-by: Andrey Konovalov <[email protected]> Tested-by: Andrey Konovalov <[email protected]> Signed-off-by: David S. Miller <[email protected]> (cherry picked from commit fdcee2cbb8438702ea1b328fb6e0ac5e9a40c7f8) Signed-off-by: Connor O'Brien <[email protected]> Bug: 62298712 Change-Id: I386efa7b8e8a99b22830a9593c92a41232ab03bb Signed-off-by: Francisco Franco <[email protected]>
franciscofranco · Dec 9, 2017 · edc2ab4 · edc2ab4
1 parent aa22bcf
commit edc2ab4
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
@@ -667,6 +667,9 @@ 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;
 
 	/* Initialize sk's sport, dport, rcv_saddr and daddr for getsockname()
 	 * and getpeername().