From f6338ac2776094b3fc27227511de53b5f96be16d Mon Sep 17 00:00:00 2001
From: Markus Boehme <markubo@amazon.com>
Date: Mon, 3 Apr 2023 23:13:47 +0200
Subject: [PATCH] ip6tables: Fix checking existence of rule
Pass the proper entry size when creating a match mask for checking the
existence of a rule. Failing to do so causes wrong results.
Reported-by: Jonathan Caicedo <jonathan@jcaicedo.com>
Fixes: eb2546a846776 ("xshared: Share make_delete_mask() between ip{,6}tables")
Signed-off-by: Markus Boehme <markubo@amazon.com>
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 78850e7dba64a949c440dbdbe557f59409c6db48)
---
iptables/ip6tables.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/iptables/ip6tables.c b/iptables/ip6tables.c
index 345af4519bfe7..9afc32c1a21ed 100644
--- a/iptables/ip6tables.c
+++ b/iptables/ip6tables.c
@@ -331,7 +331,7 @@ check_entry(const xt_chainlabel chain, struct ip6t_entry *fw,
int ret = 1;
unsigned char *mask;
- mask = make_delete_mask(matches, target, sizeof(fw));
+ mask = make_delete_mask(matches, target, sizeof(*fw));
for (i = 0; i < nsaddrs; i++) {
fw->ipv6.src = saddrs[i];
fw->ipv6.smsk = smasks[i];
--
2.40.0