static uint8_t ltp_data(NeAACDecStruct *hDecoder, ic_stream *ics, ltp_info *ltp, bitfile *ld)
{
    uint8_t sfb, w;

    ltp->lag = 0;

#ifdef LD_DEC
    if (hDecoder->object_type == LD)
    {
        ltp->lag_update = (uint8_t)faad_getbits(ld, 1
            DEBUGVAR(1,142,"ltp_data(): lag_update"));

        if (ltp->lag_update)
        {
            ltp->lag = (uint16_t)faad_getbits(ld, 10
                DEBUGVAR(1,81,"ltp_data(): lag"));
        }
    } else {
#endif
        ltp->lag = (uint16_t)faad_getbits(ld, 11
            DEBUGVAR(1,81,"ltp_data(): lag"));
#ifdef LD_DEC
    }
#endif

    /* Check length of lag */
    if (ltp->lag > (hDecoder->frameLength << 1))
        return 18;

    ltp->coef = (uint8_t)faad_getbits(ld, 3
        DEBUGVAR(1,82,"ltp_data(): coef"));

    if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
    {
        for (w = 0; w < ics->num_windows; w++)
        {
            if ((ltp->short_used[w] = faad_get1bit(ld
                DEBUGVAR(1,83,"ltp_data(): short_used"))) & 1)
            {
                ltp->short_lag_present[w] = faad_get1bit(ld
                    DEBUGVAR(1,84,"ltp_data(): short_lag_present"));
                if (ltp->short_lag_present[w])
                {
                    ltp->short_lag[w] = (uint8_t)faad_getbits(ld, 4
                        DEBUGVAR(1,85,"ltp_data(): short_lag"));
                }
            }
        }
    } else {
        ltp->last_band = (ics->max_sfb < MAX_LTP_SFB ? ics->max_sfb : MAX_LTP_SFB);

        for (sfb = 0; sfb < ltp->last_band; sfb++)
        {
            ltp->long_used[sfb] = faad_get1bit(ld
                DEBUGVAR(1,86,"ltp_data(): long_used"));
        }
    }

    return 0;
}

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.