<div class="container-fluid" style="height: 100vh;">
  <div class="row">
    <div class="col-md-4 overflow-auto" style="border: 1px solid blue; height: 4000px;">

    </div>
    <div class="col-md-4" style="border: 1px solid red; height: 100px;">

    </div>
  </div>
</div>