Fix critical memory corruption bug caused by overwriting active page tables marked as free memory

2026-03-12 19:02:58 +01:00
parent 5fe0740c2e
commit 21b3b269a7
8 changed files with 304 additions and 156 deletions
--- a/boot/xtldr/includes/xtldr.hh
+++ b/boot/xtldr/includes/xtldr.hh
@@ -165,6 +165,7 @@ class Memory
                                               OUT PVOID *Memory);
        STATIC XTCDECL EFI_STATUS BuildPageMap(IN PXTBL_PAGE_MAPPING PageMap,
                                               IN ULONG_PTR SelfMapAddress);
+        STATIC XTCDECL EFI_STATUS CommitPageMap(IN PXTBL_PAGE_MAPPING PageMap);
        STATIC XTCDECL EFI_STATUS FreePages(IN ULONGLONG NumberOfPages,
                                            IN EFI_PHYSICAL_ADDRESS Memory);
        STATIC XTCDECL EFI_STATUS FreePool(IN PVOID Memory);