int32_t PPB_URLLoader_Impl::FinishStreamingToFile(
    scoped_refptr<TrackedCallback> callback) {
  int32_t rv = ValidateCallback(callback);
  if (rv != PP_OK)
    return rv;
  if (!response_info_ || !response_info_->body())
    return PP_ERROR_FAILED;

  if (done_status_ != PP_OK_COMPLETIONPENDING)
    return done_status_;

  is_streaming_to_file_ = true;
  if (is_asynchronous_load_suspended_)
    SetDefersLoading(false);

  RegisterCallback(callback);
  return PP_OK_COMPLETIONPENDING;
}

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.