From 75065a8929069bc93181848818e23f147a73f83a Mon Sep 17 00:00:00 2001
From: Lin Ma <linma@zju.edu.cn>
Date: Tue, 27 Jun 2023 11:39:54 +0800
Subject: [PATCH] net: af_key: fix sadb_x_filter validation

When running xfrm_state_walk_init(), the xfrm_address_filter being used
is okay to have a splen/dplen that equals to sizeof(xfrm_address_t)<<3.
This commit replaces >= to > to make sure the boundary checking is
correct.

Fixes: 37bd22420f85 ("af_key: pfkey_dump needs parameter validation")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
 net/key/af_key.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/key/af_key.c b/net/key/af_key.c
index ede3c6a603532..b4ea4cf9fad43 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1848,9 +1848,9 @@ static int pfkey_dump(struct sock *sk, struct sk_buff *skb, const struct sadb_ms
 	if (ext_hdrs[SADB_X_EXT_FILTER - 1]) {
 		struct sadb_x_filter *xfilter = ext_hdrs[SADB_X_EXT_FILTER - 1];
 
-		if ((xfilter->sadb_x_filter_splen >=
+		if ((xfilter->sadb_x_filter_splen >
 			(sizeof(xfrm_address_t) << 3)) ||
-		    (xfilter->sadb_x_filter_dplen >=
+		    (xfilter->sadb_x_filter_dplen >
 			(sizeof(xfrm_address_t) << 3))) {
 			mutex_unlock(&pfk->dump_lock);
 			return -EINVAL;