static BrotliResult ReadCodeLengthCodeLengths(BrotliState* s) {
  BrotliBitReader* br = &s->br;
  uint32_t num_codes = s->repeat;
  unsigned space = s->space;
  uint32_t i = s->sub_loop_counter;
  for (; i < CODE_LENGTH_CODES; ++i) {
    const uint8_t code_len_idx = kCodeLengthCodeOrder[i];
    uint32_t ix;
    uint32_t v;
    if (PREDICT_FALSE(!BrotliSafeGetBits(br, 4, &ix))) {
      uint32_t available_bits = BrotliGetAvailableBits(br);
      if (available_bits != 0) {
        ix = BrotliGetBitsUnmasked(br) & 0xF;
      } else {
        ix = 0;
      }
      if (kCodeLengthPrefixLength[ix] > available_bits) {
        s->sub_loop_counter = i;
        s->repeat = num_codes;
        s->space = space;
        s->substate_huffman = BROTLI_STATE_HUFFMAN_COMPLEX;
        return BROTLI_RESULT_NEEDS_MORE_INPUT;
      }
    }
    v = kCodeLengthPrefixValue[ix];
    BrotliDropBits(br, kCodeLengthPrefixLength[ix]);
    s->code_length_code_lengths[code_len_idx] = (uint8_t)v;
    BROTLI_LOG_ARRAY_INDEX(s->code_length_code_lengths, code_len_idx);
    if (v != 0) {
      space = space - (32U >> v);
      ++num_codes;
      ++s->code_length_histo[v];
      if (space - 1U >= 32U) {
        /* space is 0 or wrapped around */
        break;
      }
    }
  }
  if (!(num_codes == 1 || space == 0)) {
    return BROTLI_FAILURE();
  }
  return BROTLI_RESULT_SUCCESS;
}

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.