From 034ddcc092adff4860fd0903777da97bc4ccc7c3 Mon Sep 17 00:00:00 2001
From: Mathias <06mathias6@gmail.com>
Date: Tue, 18 Aug 2026 12:13:32 +0200
Subject: [PATCH] fix(vmem): use ConcurrentDictionary for _pageProtections to
 prevent race corruption (#823)

---
 src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs b/src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs
index 4991746c..8c6f8f07 100644
--- a/src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs
+++ b/src/SharpEmu.Core/Memory/PhysicalVirtualMemory.cs
@@ -1,6 +1,7 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using System.Collections.Concurrent;
 using System.Runtime.InteropServices;
 using SharpEmu.Core.Loader;
 using SharpEmu.HLE;
@@ -18,7 +19,7 @@ public sealed unsafe class PhysicalVirtualMemory : IVirtualMemory, IGuestMemoryA
     private readonly object _allocationSearchHintGate = new();
     private readonly List<MemoryRegion> _regions = new();
     private readonly Dictionary<(ulong DesiredAddress, ulong Alignment, bool Executable), ulong> _allocationSearchHints = new();
-    private readonly Dictionary<ulong, ProgramHeaderFlags> _pageProtections = new();
+    private readonly ConcurrentDictionary<ulong, ProgramHeaderFlags> _pageProtections = new();
     private bool _disposed;
 
     [ThreadStatic]