From 7f423077ad4b31c931090736f4c28396b671fabf Mon Sep 17 00:00:00 2001
From: Natalia Portillo <claunia@claunia.com>
Date: Thu, 3 Jun 2021 12:52:00 +0100
Subject: [PATCH] Guard against reading beyond partition end when identifying
 F2FS filesystem. Fixes #578

---
 Aaru.Filesystems/F2FS.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Aaru.Filesystems/F2FS.cs b/Aaru.Filesystems/F2FS.cs
index c92c12a70..a38ba830a 100644
--- a/Aaru.Filesystems/F2FS.cs
+++ b/Aaru.Filesystems/F2FS.cs
@@ -73,7 +73,7 @@ namespace Aaru.Filesystems
             if(Marshal.SizeOf<Superblock>() % imagePlugin.Info.SectorSize != 0)
                 sbSize++;
 
-            if(partition.Start + sbAddr >= partition.End)
+            if(partition.Start + sbAddr + sbSize >= partition.End)
                 return false;
 
             byte[] sector = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize);