bool FFmpegVideoDecoder::FFmpegDecode(
    const scoped_refptr<DecoderBuffer>& buffer,
    scoped_refptr<VideoFrame>* video_frame) {
  DCHECK(video_frame);

  avcodec_get_frame_defaults(av_frame_.get());

  AVPacket packet;
  av_init_packet(&packet);
  if (buffer->end_of_stream()) {
    packet.data = NULL;
    packet.size = 0;
  } else {
    packet.data = const_cast<uint8*>(buffer->data());
    packet.size = buffer->data_size();

    codec_context_->reordered_opaque = buffer->timestamp().InMicroseconds();

    av_frame_->reordered_opaque = codec_context_->reordered_opaque;
  }

  int frame_decoded = 0;
  int result = avcodec_decode_video2(codec_context_.get(),
                                     av_frame_.get(),
                                     &frame_decoded,
                                     &packet);
  if (result < 0) {
    LOG(ERROR) << "Error decoding video: " << buffer->AsHumanReadableString();
    *video_frame = NULL;
    return false;
  }

  if (frame_decoded == 0) {
    *video_frame = NULL;
    return true;
  }

  if (!av_frame_->data[VideoFrame::kYPlane] ||
      !av_frame_->data[VideoFrame::kUPlane] ||
      !av_frame_->data[VideoFrame::kVPlane]) {
    LOG(ERROR) << "Video frame was produced yet has invalid frame data.";
    *video_frame = NULL;
    return false;
  }

  if (!av_frame_->opaque) {
    LOG(ERROR) << "VideoFrame object associated with frame data not set.";
    return false;
  }
  *video_frame = static_cast<VideoFrame*>(av_frame_->opaque);

  (*video_frame)->set_timestamp(
      base::TimeDelta::FromMicroseconds(av_frame_->reordered_opaque));

  return true;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.