From 5893179d92d988f44b74fd50b8498690bc813527 Mon Sep 17 00:00:00 2001
From: Crsky <crskycode@hotmail.com>
Date: Mon, 2 Feb 2026 19:58:20 +0800
Subject: [PATCH] fix: Add offset check

---
 ArcFormats/Edoire/ArcARC.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ArcFormats/Edoire/ArcARC.cs b/ArcFormats/Edoire/ArcARC.cs
index f9131806..ce664846 100644
--- a/ArcFormats/Edoire/ArcARC.cs
+++ b/ArcFormats/Edoire/ArcARC.cs
@@ -49,6 +49,8 @@ namespace GameRes.Formats.Edoire
             if (!file.View.AsciiEqual (0, "@ARCH000"))
                 return null;
             var index_offset = file.View.ReadInt64 (file.MaxOffset-8);
+            if (index_offset >= file.MaxOffset-12)
+                return null;
             var count = file.View.ReadInt32 (index_offset);
             if (!IsSaneCount (count))
                 return null;