From 760b5b3cf0ac3e404954f1349a96bbf807afe619 Mon Sep 17 00:00:00 2001
From: Gliniak <Gliniak93@gmail.com>
Date: Tue, 4 Aug 2020 15:26:04 +0200
Subject: [PATCH] Restrict NtAllocateVirtualMemory only to virtual memory range

---
 src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc b/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
index c54ecc0eb..917058d1e 100644
--- a/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
+++ b/src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
@@ -96,6 +96,14 @@ dword_result_t NtAllocateVirtualMemory(lpdword_t base_addr_ptr,
     XELOGW("Game setting EXECUTE bit on allocation");
   }
 
+  // Tried to allocate virtual over xex or physical range
+  if (*base_addr_ptr >= 0x80000000) {
+    XELOGE(
+        "NtAllocateVirtualMemory tried to allocate memory over xex or physical "
+        "range");
+    return X_STATUS_INVALID_PARAMETER;
+  }
+
   uint32_t page_size;
   if (*base_addr_ptr != 0) {
     // ignore specified page size when base address is specified.