diff options
| -rw-r--r-- | net/ipv6/mcast.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 6d0f5dc8e3a..92f8e48e4ba 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, |