From de7aa3106adcdc14ed5e09c653133115a83e512a Mon Sep 17 00:00:00 2001
From: Rozlette <Uberpanzermensch@gmail.com>
Date: Sat, 20 Jan 2018 14:56:15 -0600
Subject: [PATCH] memory: Return false for large VAddr in IsValidVirtualAddress
---
src/core/memory.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index 74a5988523..a3d2d4951e 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -219,6 +219,9 @@ void Write(const VAddr vaddr, const T data) {
bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) {
auto& page_table = process.vm_manager.page_table;
+ if ((vaddr >> PAGE_BITS) >= PAGE_TABLE_NUM_ENTRIES)
+ return false;
+
const u8* page_pointer = page_table.pointers[vaddr >> PAGE_BITS];
if (page_pointer)
return true;