From ae8ac1eacbebb309c105e50177a4a7b761548c82 Mon Sep 17 00:00:00 2001
From: Aiken Harris <harraiken91@gmail.com>
Date: Tue, 3 Mar 2026 06:44:40 +0100
Subject: [PATCH] Fix uninitialized PTE pages causing memory corruption

---
 xtoskrnl/mm/amd64/pfn.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xtoskrnl/mm/amd64/pfn.cc b/xtoskrnl/mm/amd64/pfn.cc
index 91e8d1d..130d849 100644
--- a/xtoskrnl/mm/amd64/pfn.cc
+++ b/xtoskrnl/mm/amd64/pfn.cc
@@ -99,6 +99,9 @@ MM::Pfn::InitializePageDirectory(IN PMMPDE StartingPde,
             /* Allocate a new PTE page and map PDE to it */
             MM::Paging::SetPte(ValidPte, AllocateBootstrapPages(1), 0);
             *StartingPde = *ValidPte;
+
+            /* Clear the newly created page */
+            RTL::Memory::ZeroMemory(MM::Paging::GetPteVirtualAddress(StartingPde), MM_PAGE_SIZE);
         }
 
         /* Move to the next PDE */