From 769c94a10373db28ff0d63f25e6d382f5db3ec3c Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Mon, 13 Feb 2023 22:01:11 +0000
Subject: [PATCH] Fix oss-fuzz #55950

Reproduces in the fuzz target, but testing hasn't reproduced in real
code.
---
 lib/utf8_mosq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/utf8_mosq.c b/lib/utf8_mosq.c
index c10c87ea..35db8766 100644
--- a/lib/utf8_mosq.c
+++ b/lib/utf8_mosq.c
@@ -64,7 +64,7 @@ BROKER_EXPORT int mosquitto_validate_utf8(const char *str, int len)
 		}
 
 		/* Reconstruct full code point */
-		if(i == len-codelen+1){
+		if(i >= len-codelen+1){
 			/* Not enough data */
 			return MOSQ_ERR_MALFORMED_UTF8;
 		}