summaryrefslogtreecommitdiffstats
path: root/net/bridge
diff options
context:
space:
mode:
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_multicast.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index ef66365b7354..fb0e36fac668 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1235,6 +1235,12 @@ static int br_ip6_multicast_query(struct net_bridge *br,
(port && port->state == BR_STATE_DISABLED))
goto out;
+ /* RFC2710+RFC3810 (MLDv1+MLDv2) require link-local source addresses */
+ if (!(ipv6_addr_type(&ip6h->saddr) & IPV6_ADDR_LINKLOCAL)) {
+ err = -EINVAL;
+ goto out;
+ }
+
if (skb->len == sizeof(*mld)) {
if (!pskb_may_pull(skb, sizeof(*mld))) {
err = -EINVAL;