From 31a141bd101e0483553aabe1a91e6efc86d483cd Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 30 Jan 2020 21:48:41 +0100
Subject: [PATCH] Kernel: Range::contains() should reject ranges with 2^32
 wrap-around

---
 Kernel/VM/RangeAllocator.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Kernel/VM/RangeAllocator.h b/Kernel/VM/RangeAllocator.h
index bc6ce844a6..999282deff 100644
--- a/Kernel/VM/RangeAllocator.h
+++ b/Kernel/VM/RangeAllocator.h
@@ -57,6 +57,8 @@ public:
 
     bool contains(VirtualAddress base, size_t size) const
     {
+        if (base.offset(size) < base)
+            return false;
         return base >= m_base && base.offset(size) <= end();
     }