From 946c0d8e6ed43dae6527e878d0077c1e11015db0 Mon Sep 17 00:00:00 2001
From: Jagdish Motwani <jagdish.motwani@sophos.com>
Date: Mon, 13 May 2019 23:47:40 +0530
Subject: [PATCH] netfilter: nf_queue: fix reinject verdict handling
This patch fixes netfilter hook traversal when there are more than 1 hooks
returning NF_QUEUE verdict. When the first queue reinjects the packet,
'nf_reinject' starts traversing hooks with a proper hook_index. However,
if it again receives a NF_QUEUE verdict (by some other netfilter hook), it
queues the packet with a wrong hook_index. So, when the second queue
reinjects the packet, it re-executes hooks in between.
Fixes: 960632ece694 ("netfilter: convert hook list to an array")
Signed-off-by: Jagdish Motwani <jagdish.motwani@sophos.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_queue.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index 9dc1d6e04946f..b5b2be55ca82e 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -255,6 +255,7 @@ static unsigned int nf_iterate(struct sk_buff *skb,
repeat:
verdict = nf_hook_entry_hookfn(hook, skb, state);
if (verdict != NF_ACCEPT) {
+ *index = i;
if (verdict != NF_REPEAT)
return verdict;
goto repeat;
--
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