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https://git.netfilter.org/iptables/commit/?id=ed4082a7405a5838c205a34c1559e289949200cc
From ed4082a7405a5838c205a34c1559e289949200cc Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 12 Jan 2023 14:38:44 +0100
Subject: extensions: NAT: Fix for -Werror=format-security
Have to pass either a string literal or format string to xt_xlate_add().
Fixes: f30c5edce0413 ("extensions: Merge SNAT, DNAT, REDIRECT and MASQUERADE")
Signed-off-by: Phil Sutter <phil@nwl.cc>
--- a/extensions/libxt_NAT.c
+++ b/extensions/libxt_NAT.c
@@ -424,7 +424,7 @@ __NAT_xlate(struct xt_xlate *xl, const struct nf_nat_range2 *r,
if (r->flags & NF_NAT_RANGE_PROTO_OFFSET)
return 0;
- xt_xlate_add(xl, tgt);
+ xt_xlate_add(xl, "%s", tgt);
if (strlen(range_str))
xt_xlate_add(xl, " to %s", range_str);
if (r->flags & NF_NAT_RANGE_PROTO_RANDOM) {
--
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