From 65662783ec46f62cf8b73e91db84f221e2f5263b Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Sat, 30 Mar 2019 18:48:14 +0400
Subject: [PATCH] (PRS): limit decompressed block size.

---
 ArcFormats/Marble/ImagePRS.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ArcFormats/Marble/ImagePRS.cs b/ArcFormats/Marble/ImagePRS.cs
index 7386b88f..fe76bf8a 100644
--- a/ArcFormats/Marble/ImagePRS.cs
+++ b/ArcFormats/Marble/ImagePRS.cs
@@ -189,6 +189,7 @@ public void Unpack ()
                     ++shift;
                     if (dst < shift)
                         throw new InvalidFormatException ("Invalid offset value");
+                    length = Math.Min (length, m_output.Length - dst);
                     Binary.CopyOverlapped (m_output, dst-shift, dst, length);
                     dst += length;
                 }