From 3de77cf23e9a19b9fc28e3b29371308325428c39 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Thu, 18 Dec 2008 19:23:56 -0800
Subject: [PATCH] Revert "xfrm: Accept ESP packets regardless of UDP
encapsulation mode"
This reverts commit e061b165c7f4ec5e2e160d990b49011b5b6e5c6a.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/xfrm/xfrm_input.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 65bcf09251ef..b4a13178fb40 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -167,6 +167,11 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
goto drop_unlock;
}
+ if ((x->encap ? x->encap->encap_type : 0) != encap_type) {
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMISMATCH);
+ goto drop_unlock;
+ }
+
if (x->props.replay_window && xfrm_replay_check(x, skb, seq)) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATESEQERROR);
goto drop_unlock;
--
2.20.1