From 6e9307c52214513b875e63a30c35915d2bdeb23d Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Sat, 21 Sep 2024 13:39:29 +0300
Subject: [PATCH] Fix possible overflow in is_zero()

---
 src/util/str_util.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util/str_util.cpp b/src/util/str_util.cpp
index 3f823f6c..e0d8bfeb 100644
--- a/src/util/str_util.cpp
+++ b/src/util/str_util.cpp
@@ -489,7 +489,7 @@ std::string format_datetime(uint64_t unixtime)
 bool is_zero(void *buf, size_t size)
 {
     size_t i = 0;
-    while (i <= size-8)
+    while (i+8 <= size)
     {
         if (*(uint64_t*)((uint8_t*)buf + i))
             return false;