Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161505Ab3DKVZL (ORCPT ); Thu, 11 Apr 2013 17:25:11 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:20734 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935356Ab3DKUsr (ORCPT ); Thu, 11 Apr 2013 16:48:47 -0400 X-Authority-Analysis: v=2.0 cv=F+XVh9dN c=1 sm=0 a=rXTBtCOcEpjy1lPqhTCpEQ==:17 a=mNMOxpOpBa8A:10 a=Ciwy3NGCPMMA:10 a=bKmRdWuc8MMA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=JTjodQwuGf4A:10 a=SaWEO8HGAAAA:8 a=0FD05c-RAAAA:8 a=h1aNt0RaAAAA:8 a=J1Y8HTJGAAAA:8 a=jmWCE8W1go-RpaolMxwA:9 a=w2ubnULX9RwA:10 a=f7GxY0FH8QIA:10 a=9n0VZpmWo7gA:10 a=4N9Db7Z2_RYA:10 a=jeBq3FmKZ4MA:10 a=NQAZYjIkpNq4k8Zk:21 a=I10nhOb4bBag_Ayo:21 a=rXTBtCOcEpjy1lPqhTCpEQ==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 74.67.115.198 Message-Id: <20130411202613.131357041@goodmis.org> User-Agent: quilt/0.60-1 Date: Thu, 11 Apr 2013 16:27:47 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Erik Hugne , YOSHIFUJI Hideaki , Hannes Frederic Sowa , "David S. Miller" Subject: [ 164/171 ] ipv6: dont accept multicast traffic with scope 0 References: <20130411202503.783159048@goodmis.org> Content-Disposition: inline; filename=0164-ipv6-don-t-accept-multicast-traffic-with-scope-0.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1707 Lines: 53 3.6.11.2 stable review patch. If anyone has any objections, please let me know. ------------------ From: Hannes Frederic Sowa [ Upstream commit 20314092c1b41894d8c181bf9aa6f022be2416aa ] v2: a) moved before multicast source address check b) changed comment to netdev style Cc: Erik Hugne Cc: YOSHIFUJI Hideaki Acked-by: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller Signed-off-by: Steven Rostedt --- net/ipv6/ip6_input.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index b196852..db70b88 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -118,6 +118,15 @@ 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 -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/