static void opj_tcd_code_block_dec_deallocate(opj_tcd_precinct_t * p_precinct)
{
    OPJ_UINT32 cblkno, l_nb_code_blocks;

    opj_tcd_cblk_dec_t * l_code_block = p_precinct->cblks.dec;
    if (l_code_block) {
        /*fprintf(stderr,"deallocate codeblock:{\n");*/
        /*fprintf(stderr,"\t x0=%d, y0=%d, x1=%d, y1=%d\n",l_code_block->x0, l_code_block->y0, l_code_block->x1, l_code_block->y1);*/
        /*fprintf(stderr,"\t numbps=%d, numlenbits=%d, len=%d, numnewpasses=%d, real_num_segs=%d, m_current_max_segs=%d\n ",
                        l_code_block->numbps, l_code_block->numlenbits, l_code_block->len, l_code_block->numnewpasses, l_code_block->real_num_segs, l_code_block->m_current_max_segs );*/


        l_nb_code_blocks = p_precinct->block_size / sizeof(opj_tcd_cblk_dec_t);
        /*fprintf(stderr,"nb_code_blocks =%d\t}\n", l_nb_code_blocks);*/

        for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {

            if (l_code_block->data) {
                opj_free(l_code_block->data);
                l_code_block->data = 00;
            }

            if (l_code_block->segs) {
                opj_free(l_code_block->segs);
                l_code_block->segs = 00;
            }

            ++l_code_block;
        }

        opj_free(p_precinct->cblks.dec);
        p_precinct->cblks.dec = 00;
    }
}

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.