X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=net%2Fipv6%2Fmcast.c;h=92f8e48e4ba4e63606412e317c28d2153eddccb0;hb=bf277b0ccea7d2422b85e232017ce3fddbe9c49c;hp=6d0f5dc8e3a608747bb4347546368fc1342c0f69;hpb=c2078e4c9120e7b38b1a02cd9fc6dd4f792110bf;p=cascardo%2Flinux.git

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 6d0f5dc8e3a6..92f8e48e4ba4 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -211,6 +211,9 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
 	struct ipv6_mc_socklist __rcu **lnk;
 	struct net *net = sock_net(sk);
 
+	if (!ipv6_addr_is_multicast(addr))
+		return -EINVAL;
+
 	spin_lock(&ipv6_sk_mc_lock);
 	for (lnk = &np->ipv6_mc_list;
 	     (mc_lst = rcu_dereference_protected(*lnk,