static void tsc2102_audio_output_update(TSC210xState *s)
{
    int enable;
    struct audsettings fmt;

    if (s->dac_voice[0]) {
        tsc210x_out_flush(s, s->codec.out.len);
        s->codec.out.size = 0;
        AUD_set_active_out(s->dac_voice[0], 0);
        AUD_close_out(&s->card, s->dac_voice[0]);
        s->dac_voice[0] = NULL;
    }
    s->codec.cts = 0;

    enable =
            (~s->dac_power & (1 << 15)) &&			/* PWDNC */
            (~s->dac_power & (1 << 10));			/* DAPWDN */
    if (!enable || !s->codec.tx_rate)
        return;

    /* Force our own sampling rate even in slave DAC mode */
    fmt.endianness = 0;
    fmt.nchannels = 2;
    fmt.freq = s->codec.tx_rate;
    fmt.fmt = AUD_FMT_S16;

    s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
                    "tsc2102.sink", s, (void *) tsc210x_audio_out_cb, &fmt);
    if (s->dac_voice[0]) {
        s->codec.cts = 1;
        AUD_set_active_out(s->dac_voice[0], 1);
    }
}

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.