From 49e97fb8b46a0a51b3538a2d02598b739b60015f Mon Sep 17 00:00:00 2001
From: Aiken Harris <harraiken91@gmail.com>
Date: Mon, 29 Dec 2025 13:17:41 +0100
Subject: [PATCH] Reserve space for color tables to fix invalid memory access

---
 xtoskrnl/mm/pfn.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xtoskrnl/mm/pfn.cc b/xtoskrnl/mm/pfn.cc
index 6bd0648..9138ac1 100644
--- a/xtoskrnl/mm/pfn.cc
+++ b/xtoskrnl/mm/pfn.cc
@@ -56,6 +56,7 @@ MM::Pfn::ComputePfnDatabaseSize(VOID)
 {
     /* Calculate the total number of pages required for the PFN database */
     PfnDatabaseSize = (HighestPhysicalPage + 1) * sizeof(MMPFN);
+    PfnDatabaseSize += (MM::Colors::GetPagingColors() * sizeof(MMCOLOR_TABLES) * 2);
     PfnDatabaseSize = ROUND_UP(PfnDatabaseSize, MM_PAGE_SIZE);
     PfnDatabaseSize >>= MM_PAGE_SHIFT;
 }