diff options
| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-02-10 05:35:22 +0000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-04-10 03:20:14 +0100 |
| commit | cf29311c2774284b8ee2e95b9799e880fd34d3d0 (patch) | |
| tree | e8471595eeb77abffddc1dee7adfdbe82ac7411e /net/ipv6/ip6_input.c | |
| parent | 8f270e25b6fa1188b4ab2e14fbf950e1c72a3bcb (diff) | |
| download | kernel_samsung_smdk4412-cf29311c2774284b8ee2e95b9799e880fd34d3d0.zip kernel_samsung_smdk4412-cf29311c2774284b8ee2e95b9799e880fd34d3d0.tar.gz kernel_samsung_smdk4412-cf29311c2774284b8ee2e95b9799e880fd34d3d0.tar.bz2 | |
ipv6: don't accept multicast traffic with scope 0
[ Upstream commit 20314092c1b41894d8c181bf9aa6f022be2416aa ]
v2:
a) moved before multicast source address check
b) changed comment to netdev style
Cc: Erik Hugne <erik.hugne@ericsson.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/ipv6/ip6_input.c')
| -rw-r--r-- | net/ipv6/ip6_input.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index f8d24dd..15295e9 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -111,6 +111,15 @@ 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 + * Nodes must not originate a packet to a multicast address whose scope + * field contains the reserved value 0; if such a packet is received, it + * must be silently dropped. + */ + if (ipv6_addr_is_multicast(&hdr->daddr) && + IPV6_ADDR_MC_SCOPE(&hdr->daddr) == 0) + goto err; + /* * RFC4291 2.7 * Multicast addresses must not be used as source addresses in IPv6 |