static GF_Err FFD_CloseService(GF_InputService *plug)
{
	FFDemux *ffd = (FFDemux*)plug->priv;

	ffd->is_running = 0;

#if FF_API_CLOSE_INPUT_FILE
	if (ffd->ctx) av_close_input_file(ffd->ctx);
#else
	if (ffd->ctx) avformat_close_input(&ffd->ctx);
#endif

	ffd->ctx = NULL;
	ffd->audio_ch = ffd->video_ch = NULL;
	ffd->audio_run = ffd->video_run = GF_FALSE;

	if (ffd->dnload) {
		if (ffd->is_running) {
			while (!ffd->is_running) gf_sleep(1);
			ffd->is_running = 0;
		}
		gf_service_download_del(ffd->dnload);
		ffd->dnload = NULL;
	}
	if (ffd->buffer) gf_free(ffd->buffer);
	ffd->buffer = NULL;

	gf_service_disconnect_ack(ffd->service, NULL, GF_OK);
#ifdef FFMPEG_DUMP_REMOTE
	if (ffd->outdbg) gf_fclose(ffd->outdbg);
#endif
	return GF_OK;
}

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.