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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 8/9] netfilter: ctnetlink: reject new conntrack request with different l4proto
Date: Wed, 10 Aug 2016 21:16:44 +0200
Message-ID: <1470856605-7903-9-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>

Currently, user can add a conntrack with different l4proto via nfnetlink.
For example, original tuple is TCP while reply tuple is SCTP. This is
invalid combination, we should report EINVAL to userspace.

Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nf_conntrack_netlink.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index b9bfe64..fdfc71f 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1894,6 +1894,8 @@ static int ctnetlink_new_conntrack(struct net *net, struct sock *ctnl,
 
 			if (!cda[CTA_TUPLE_ORIG] || !cda[CTA_TUPLE_REPLY])
 				return -EINVAL;
+			if (otuple.dst.protonum != rtuple.dst.protonum)
+				return -EINVAL;
 
 			ct = ctnetlink_create_conntrack(net, &zone, cda, &otuple,
 							&rtuple, u3);
-- 
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 ` [PATCH 7/9] netfilter: nfnetlink_queue: reject verdict request from different portid Pablo Neira Ayuso
2016-08-10 19:16 ` Pablo Neira Ayuso [this message]
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 8/9] netfilter: ctnetlink: reject new conntrack request with different l4proto Pablo Neira Ayuso

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