static uint32_t latmAudioMuxElement(latm_header *latm, bitfile *ld)
{
    uint32_t ascLen, asc_bits=0;
    uint32_t x1, y1, m, n, i;
    program_config pce;
    mp4AudioSpecificConfig mp4ASC;

    latm->useSameStreamMux = (uint8_t)faad_getbits(ld, 1);
    if(!latm->useSameStreamMux)
    {
        latm->version = (uint8_t) faad_getbits(ld, 1);
        if(latm->version)
            latm->versionA = (uint8_t) faad_getbits(ld, 1);
        if(latm->versionA)
        {
            fprintf(stderr, "versionA not supported\n");
            return 0;
        }
        if(latm->version) //read taraBufferFullness
            latm_get_value(ld);
        latm->allStreamsSameTimeFraming = (uint8_t)faad_getbits(ld, 1);
        latm->numSubFrames = (uint8_t)faad_getbits(ld, 6) + 1;
        latm->numPrograms = (uint8_t)faad_getbits(ld, 4) + 1;
        latm->numLayers = faad_getbits(ld, 3) + 1;
        if(latm->numPrograms>1 || !latm->allStreamsSameTimeFraming || latm->numSubFrames>1 || latm->numLayers>1)
        {
            fprintf(stderr, "\r\nUnsupported LATM configuration: %d programs/ %d subframes, %d layers, allstreams: %d\n",
                latm->numPrograms, latm->numSubFrames, latm->numLayers, latm->allStreamsSameTimeFraming);
            return 0;
        }
        ascLen = 0;
        if(latm->version)
            ascLen = latm_get_value(ld);

        x1 = faad_get_processed_bits(ld);
        if(AudioSpecificConfigFromBitfile(ld, &mp4ASC, &pce, 0, 1) < 0)
            return 0;

        y1 = faad_get_processed_bits(ld);
        if((y1-x1) <= MAX_ASC_BYTES*8)
        {
            faad_rewindbits(ld);
            m = x1;
            while(m>0)
            {
                n = min(m, 32);
                faad_getbits(ld, n);
                m -= n;
            }

            i = 0;
            m = latm->ASCbits = y1 - x1;
            while(m > 0)
            {
                n = min(m, 8);
                latm->ASC[i++] = (uint8_t) faad_getbits(ld, n);
                m -= n;
            }
        }

        asc_bits = y1-x1;

        if(ascLen>asc_bits)
            faad_getbits(ld, ascLen-asc_bits);

        latm->framelen_type = (uint8_t) faad_getbits(ld, 3);
        if(latm->framelen_type == 0)
        {
            latm->frameLength = 0;
            faad_getbits(ld, 8); //buffer fullness for frame_len_type==0, useless
        }
        else if(latm->framelen_type == 1)
        {
            latm->frameLength = faad_getbits(ld, 9);
            if(latm->frameLength==0)
            {
                fprintf(stderr, "Invalid frameLength: 0\r\n");
                return 0;
            }
            latm->frameLength = (latm->frameLength+20)*8;
        }
        else
        {   //hellish CELP or HCVX stuff, discard
            fprintf(stderr, "Unsupported CELP/HCVX framelentype: %d\n", latm->framelen_type);
            return 0;
        }

        latm->otherDataLenBits = 0;
        if(faad_getbits(ld, 1))
        {   //other data present
            int esc, tmp;
            if(latm->version)
                latm->otherDataLenBits = latm_get_value(ld);
            else do
            {
                esc = faad_getbits(ld, 1);
                tmp = faad_getbits(ld, 8);
                latm->otherDataLenBits = (latm->otherDataLenBits << 8) + tmp;
            } while(esc);
        }
        if(faad_getbits(ld, 1)) //crc
            faad_getbits(ld, 8);
        latm->inited = 1;
      }

      if(latm->inited)
          return latmParsePayload(latm, ld);
      else
          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.