From c53814c223dd86ffcc7426bdfa0db68aeb537983 Mon Sep 17 00:00:00 2001
From: anim001k <140460766+anim001k@users.noreply.github.com>
Date: Fri, 26 Sep 2025 20:00:15 +0200
Subject: [PATCH] Update util.go

---
 eth/tracers/internal/util.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/eth/tracers/internal/util.go b/eth/tracers/internal/util.go
index 88a9f5db44..cd22e2158b 100644
--- a/eth/tracers/internal/util.go
+++ b/eth/tracers/internal/util.go
@@ -53,7 +53,8 @@ func memoryCopy(m []byte, offset, size int64) (cpy []byte) {
 		return nil
 	}
 
-	if len(m) > int(offset) {
+	// Check that we have enough data in the slice to safely copy the requested range
+	if len(m) > int(offset) && int(offset+size) <= len(m) {
 		cpy = make([]byte, size)
 		copy(cpy, m[offset:offset+size])