From 526bdb80a23b2e10ed4ccc3fcf309c9118d892d6 Mon Sep 17 00:00:00 2001
From: Thomas Graf <tgraf@suug.ch>
Date: Tue, 3 May 2005 14:26:01 -0700
Subject: [PATCH] [XFRM]: Prevent off-by-one access to xfrm_dispatch

Makes the type > XFRM_MSG_MAX check behave correctly to
protect access to xfrm_dispatch.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/xfrm.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index f0df02ae68..4d19b9e653 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -140,8 +140,9 @@ enum {
 	XFRM_MSG_FLUSHPOLICY,
 #define XFRM_MSG_FLUSHPOLICY XFRM_MSG_FLUSHPOLICY
 
-	XFRM_MSG_MAX
+	__XFRM_MSG_MAX
 };
+#define XFRM_MSG_MAX (__XFRM_MSG_MAX - 1)
 
 struct xfrm_user_tmpl {
 	struct xfrm_id		id;
-- 
2.39.5