static uint8_t spectral_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld,
                             int16_t *spectral_data)
{
    int8_t i;
    uint8_t g;
    uint16_t inc, k, p = 0;
    uint8_t groups = 0;
    uint8_t sect_cb;
    uint8_t result;
    uint16_t nshort = hDecoder->frameLength/8;

#ifdef PROFILE
    int64_t count = faad_get_ts();
#endif

    for(g = 0; g < ics->num_window_groups; g++)
    {
        p = groups*nshort;

        for (i = 0; i < ics->num_sec[g]; i++)
        {
            sect_cb = ics->sect_cb[g][i];

            inc = (sect_cb >= FIRST_PAIR_HCB) ? 2 : 4;

            switch (sect_cb)
            {
            case ZERO_HCB:
            case NOISE_HCB:
            case INTENSITY_HCB:
            case INTENSITY_HCB2:
#ifdef SD_PRINT
                {
                    int j;
                    for (j = ics->sect_sfb_offset[g][ics->sect_start[g][i]]; j < ics->sect_sfb_offset[g][ics->sect_end[g][i]]; j++)
                    {
                        printf("%d\n", 0);
                    }
                }
#endif
#ifdef SFBO_PRINT
                printf("%d\n", ics->sect_sfb_offset[g][ics->sect_start[g][i]]);
#endif
                p += (ics->sect_sfb_offset[g][ics->sect_end[g][i]] -
                    ics->sect_sfb_offset[g][ics->sect_start[g][i]]);
                break;
            default:
#ifdef SFBO_PRINT
                printf("%d\n", ics->sect_sfb_offset[g][ics->sect_start[g][i]]);
#endif
                for (k = ics->sect_sfb_offset[g][ics->sect_start[g][i]];
                     k < ics->sect_sfb_offset[g][ics->sect_end[g][i]]; k += inc)
                {
                    if ((result = huffman_spectral_data(sect_cb, ld, &spectral_data[p])) > 0)
                        return result;
#ifdef SD_PRINT
                    {
                        int j;
                        for (j = p; j < p+inc; j++)
                        {
                            printf("%d\n", spectral_data[j]);
                        }
                    }
#endif
                    p += inc;
                }
                break;
            }
        }
        groups += ics->window_group_length[g];
    }

#ifdef PROFILE
    count = faad_get_ts() - count;
    hDecoder->spectral_cycles += count;
#endif

    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.