add access(2) call before dlopening files

diff --git a/src/pal/src/loader/module.cpp b/src/pal/src/loader/module.cpp
index dc4c8ba..c817ffe 100644 (file)
--- a/src/pal/src/loader/module.cpp
+++ b/src/pal/src/loader/module.cpp
@@ -1428,6 +1428,15 @@ static NATIVE_LIBRARY_HANDLE LOADLoadLibraryDirect(LPCSTR libraryNameOrPath)
     _ASSERTE(libraryNameOrPath != nullptr);
     _ASSERTE(libraryNameOrPath[0] != '\0');
 
+    if (strchr(libraryNameOrPath, '/') != nullptr)
+    {
+           if (access(libraryNameOrPath, F_OK) == -1)
+           {
+                   SetLastError(ERROR_MOD_NOT_FOUND);
+                   return (NATIVE_LIBRARY_HANDLE)nullptr;
+           }
+    }
+
     NATIVE_LIBRARY_HANDLE dl_handle = dlopen(libraryNameOrPath, RTLD_LAZY);
     if (dl_handle == nullptr)
     {