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authorLiping Zhang <liping.zhang@spreadtrum.com>2016-08-08 17:07:27 +0300
committerPablo Neira Ayuso <pablo@netfilter.org>2016-08-09 11:39:25 +0300
commit00a3101f561816e58de054a470484996f78eb5eb (patch)
tree2c322fc56e800df06ea164a2a149c6d13edeb188 /net
parentb18bcb0019cf57a3db0917b77e65c29bd9b00f54 (diff)
downloadlinux-00a3101f561816e58de054a470484996f78eb5eb.tar.xz
netfilter: nfnetlink_queue: reject verdict request from different portid
Like NFQNL_MSG_VERDICT_BATCH do, we should also reject the verdict request when the portid is not same with the initial portid(maybe from another process). Fixes: 97d32cf9440d ("netfilter: nfnetlink_queue: batch verdict support") Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com> Reviewed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nfnetlink_queue.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 5d36a0926b4a..f49f45081acb 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -1145,10 +1145,8 @@ static int nfqnl_recv_verdict(struct net *net, struct sock *ctnl,
struct nfnl_queue_net *q = nfnl_queue_pernet(net);
int err;
- queue = instance_lookup(q, queue_num);
- if (!queue)
- queue = verdict_instance_lookup(q, queue_num,
- NETLINK_CB(skb).portid);
+ queue = verdict_instance_lookup(q, queue_num,
+ NETLINK_CB(skb).portid);
if (IS_ERR(queue))
return PTR_ERR(queue);