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From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 7/9] netfilter: nfnetlink_queue: reject verdict request from different portid
Date: Wed, 10 Aug 2016 21:16:43 +0200
Message-ID: <1470856605-7903-8-git-send-email-pablo@netfilter.org> (raw)
In-Reply-To: <1470856605-7903-1-git-send-email-pablo@netfilter.org>

From: Liping Zhang <liping.zhang@spreadtrum.com>

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>
---
 net/netfilter/nfnetlink_queue.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 5d36a09..f49f450 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);
 
-- 
2.1.4

  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-10 19:16 [PATCH 0/9] Netfilter fixes for net Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 1/9] netfilter: nf_ct_h323: do not re-activate already expired timer Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 2/9] netfilter: nf_tables: s/MFT_REG32_01/NFT_REG32_01 Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 3/9] netfilter: nft_rbtree: ignore inactive matching element with no descendants Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 4/9] netfilter: nf_conntrack_sip: CSeq 0 is a valid CSeq Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 5/9] netfilter: nf_ct_expect: remove the redundant slash when policy name is empty Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 6/9] netfilter: nfnetlink_queue: fix memory leak when attach expectation successfully Pablo Neira Ayuso
2016-08-10 19:16 ` Pablo Neira Ayuso [this message]
2016-08-10 19:16 ` [PATCH 8/9] netfilter: ctnetlink: reject new conntrack request with different l4proto Pablo Neira Ayuso
2016-08-10 19:16 ` [PATCH 9/9] netfilter: nft_exthdr: Add size check on u8 nft_exthdr attributes Pablo Neira Ayuso
  -- strict thread matches above, loose matches on Subject: below --
2016-08-10 18:56 [PATCH 0/9] Netfilter fixes for net Pablo Neira Ayuso
2016-08-10 18:56 ` [PATCH 7/9] netfilter: nfnetlink_queue: reject verdict request from different portid Pablo Neira Ayuso

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