From ed63c617bc93fe678997dcc3a865c3db88b7f8be Mon Sep 17 00:00:00 2001
From: Nick Peng <pymumu@gmail.com>
Date: Sat, 9 Jan 2021 12:28:51 +0800
Subject: [PATCH] BugFix: Fix issue #669, Contributed by Enna1

---
 src/dns.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/dns.c b/src/dns.c
index 83b15dc..fa45577 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -940,7 +940,7 @@ static int _dns_decode_domain(struct dns_context *context, char *output, int siz
 
 	/*[len]string[len]string...[0]0 */
 	while (1) {
-		if (ptr > context->data + context->maxsize || ptr < context->data || output_len >= size - 1 || ptr_jump > 4) {
+		if (ptr >= context->data + context->maxsize || ptr < context->data || output_len >= size - 1 || ptr_jump > 4) {
 			return -1;
 		}