| Message ID | 4EB93FA6.3090709@hp.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Brian Haley <brian.haley@hp.com> Date: Tue, 08 Nov 2011 09:41:42 -0500 > RFC 4291 Section 2.7 says Multicast addresses must not be used as source > addresses in IPv6 packets - drop them on input so we don't process the > packet further. > > Signed-off-by: Brian Haley <brian.haley@hp.com> > Reported-and-Tested-by: Kumar Sanghvi <divinekumar@gmail.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 027c7ff..a46c64e 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -111,6 +111,14 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt ipv6_addr_loopback(&hdr->daddr)) goto err; + /* + * RFC4291 2.7 + * Multicast addresses must not be used as source addresses in IPv6 + * packets or appear in any Routing header. + */ + if (ipv6_addr_is_multicast(&hdr->saddr)) + goto err; + skb->transport_header = skb->network_header + sizeof(*hdr); IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);
RFC 4291 Section 2.7 says Multicast addresses must not be used as source addresses in IPv6 packets - drop them on input so we don't process the packet further. Signed-off-by: Brian Haley <brian.haley@hp.com> Reported-and-Tested-by: Kumar Sanghvi <divinekumar@gmail.com> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html