Fix uninitialized PTE pages causing memory corruption

2026-03-03 06:44:40 +01:00
parent a72bfd3902
commit ae8ac1eacb
1 changed files with 3 additions and 0 deletions
--- 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 */