void AudioNode::connect(AudioParam* param,
                        unsigned output_index,
                        ExceptionState& exception_state) {
  DCHECK(IsMainThread());
  BaseAudioContext::GraphAutoLocker locker(context());

  if (context()->IsContextClosed()) {
    exception_state.ThrowDOMException(
        kInvalidStateError,
        "Cannot connect after the context has been closed.");
    return;
  }

  if (!param) {
    exception_state.ThrowDOMException(kSyntaxError, "invalid AudioParam.");
    return;
  }

  if (output_index >= numberOfOutputs()) {
    exception_state.ThrowDOMException(
        kIndexSizeError, "output index (" + String::Number(output_index) +
                             ") exceeds number of outputs (" +
                             String::Number(numberOfOutputs()) + ").");
    return;
  }

  if (context() != param->Context()) {
    exception_state.ThrowDOMException(
        kSyntaxError,
        "cannot connect to an AudioParam "
        "belonging to a different audio context.");
    return;
  }

  param->Handler().Connect(Handler().Output(output_index));
  if (!connected_params_[output_index])
    connected_params_[output_index] = new HeapHashSet<Member<AudioParam>>();
  connected_params_[output_index]->insert(param);
}

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 Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.