Fix bounds check in MappableQuery

2026-07-24 12:32:28 -07:00 · 2025-07-07 04:12:16 +10:00
parent a9c0986fb2
commit 8ed08befcb
1 changed files with 7 additions and 0 deletions
@@ -145,6 +145,13 @@ static LPVOID MappableQuery(_In_opt_ LPCVOID lpAddress, _Out_ PMAPPABLE_MEM pMap
    }

    --it;
+
+    if (it->first + it->second.RegionSize <= (ULONG_PTR)lpAddress)
+    {
+        *pMappable = {};
+        return nullptr;
+    }
+
    *pMappable = it->second;
    return (LPVOID)it->first;
 }