From e730c15519d09ea528b4d2f1103681fa5937c0e6 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 17 Sep 2007 11:53:39 -0700 Subject: [NET]: Make packet reception network namespace safe This patch modifies every packet receive function registered with dev_add_pack() to drop packets if they are not from the initial network namespace. This should ensure that the various network stacks do not receive packets in a anything but the initial network namespace until the code has been converted and is ready for them. Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller --- net/ipv6/ip6_input.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'net/ipv6/ip6_input.c') diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 30a5cb1b203..7d18cac3f11 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -61,6 +61,11 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt u32 pkt_len; struct inet6_dev *idev; + if (dev->nd_net != &init_net) { + kfree_skb(skb); + return 0; + } + if (skb->pkt_type == PACKET_OTHERHOST) { kfree_skb(skb); return 0; -- cgit v1.2.3