From beeab352de413e1c04de0a67ee36525fcf6e99dd Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Fri, 8 Jul 2022 22:00:58 +0900
Subject: [PATCH] resolve: fix heap-buffer-overflow reported by ASAN with
 strict_string_checks=1

Fixes #23942.
---
 src/resolve/resolved-dns-packet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c
index 14ce0fe2c86..0e32fb96298 100644
--- a/src/resolve/resolved-dns-packet.c
+++ b/src/resolve/resolved-dns-packet.c
@@ -1389,7 +1389,7 @@ int dns_packet_read_string(DnsPacket *p, char **ret, size_t *start) {
         if (memchr(d, 0, c))
                 return -EBADMSG;
 
-        t = strndup(d, c);
+        t = memdup_suffix0(d, c);
         if (!t)
                 return -ENOMEM;
 
-- 
2.47.3