netdev - [PATCH v2 4/4] neigh: don't leak default parms to uninitial netns

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Message-Id: <1371175607-1405-4-git-send-email-gaofeng@cn.fujitsu.com>
Date:	Fri, 14 Jun 2013 10:06:47 +0800
From:	Gao feng <gaofeng@...fujitsu.com>
To:	davem@...emloft.net
Cc:	ebiederm@...ssion.com, netdev@...r.kernel.org,
	Gao feng <gaofeng@...fujitsu.com>
Subject: [PATCH v2 4/4] neigh: don't leak default parms to uninitial netns

Only allow initial net namespace to get default parms
through netlink.

Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
---
 net/core/neighbour.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 5e0fe89..3bb6115 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2094,7 +2094,8 @@ static int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
 		if (tidx < tbl_skip || (family && tbl->family != family))
 			continue;
 
-		if (neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).portid,
+		if (net_eq(net, &init_net) &&
+		    neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).portid,
 				       cb->nlh->nlmsg_seq, RTM_NEWNEIGHTBL,
 				       NLM_F_MULTI) <= 0)
 			break;
-- 
1.8.1.4

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