ArmPkg/ArmMmuLib ARM: disregard high memory when setting permissions

[mirror_edk2.git] / ArmPkg / Library / ArmMmuLib / Arm / ArmMmuLibCore.c

diff --git a/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibCore.c b/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibCore.c
index 3b3b20aa9b7869e4869b70b7db53dc8d4163c730..bffab83d4fd0bbe1571fbab9ca3ae0c879a6357b 100644 (file)
--- a/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibCore.c
+++ b/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibCore.c
@@ -744,6 +744,10 @@ ArmSetMemoryAttributes (
   UINT64        ChunkLength;\r
   BOOLEAN       FlushTlbs;\r
 \r
+  if (BaseAddress > (UINT64)MAX_ADDRESS - Length + 1) {\r
+    return EFI_UNSUPPORTED;\r
+  }\r
+\r
   if (Length == 0) {\r
     return EFI_SUCCESS;\r
   }\r