OPJ_BOOL opj_tcd_copy_tile_data(opj_tcd_t *p_tcd,
                                OPJ_BYTE * p_src,
                                OPJ_UINT32 p_src_length)
{
    OPJ_UINT32 i, j, l_data_size = 0;
    opj_image_comp_t * l_img_comp = 00;
    opj_tcd_tilecomp_t * l_tilec = 00;
    OPJ_UINT32 l_size_comp, l_remaining;
    OPJ_UINT32 l_nb_elem;

    l_data_size = opj_tcd_get_encoded_tile_size(p_tcd);
    if (l_data_size != p_src_length) {
        return OPJ_FALSE;
    }

    l_tilec = p_tcd->tcd_image->tiles->comps;
    l_img_comp = p_tcd->image->comps;
    for (i = 0; i < p_tcd->image->numcomps; ++i) {
        l_size_comp = l_img_comp->prec >> 3; /*(/ 8)*/
        l_remaining = l_img_comp->prec & 7;  /* (%8) */
        l_nb_elem = (OPJ_UINT32)((l_tilec->x1 - l_tilec->x0) * (l_tilec->y1 -
                                 l_tilec->y0));

        if (l_remaining) {
            ++l_size_comp;
        }

        if (l_size_comp == 3) {
            l_size_comp = 4;
        }

        switch (l_size_comp) {
        case 1: {
            OPJ_CHAR * l_src_ptr = (OPJ_CHAR *) p_src;
            OPJ_INT32 * l_dest_ptr = l_tilec->data;

            if (l_img_comp->sgnd) {
                for (j = 0; j < l_nb_elem; ++j) {
                    *(l_dest_ptr++) = (OPJ_INT32)(*(l_src_ptr++));
                }
            } else {
                for (j = 0; j < l_nb_elem; ++j) {
                    *(l_dest_ptr++) = (*(l_src_ptr++)) & 0xff;
                }
            }

            p_src = (OPJ_BYTE*) l_src_ptr;
        }
        break;
        case 2: {
            OPJ_INT32 * l_dest_ptr = l_tilec->data;
            OPJ_INT16 * l_src_ptr = (OPJ_INT16 *) p_src;

            if (l_img_comp->sgnd) {
                for (j = 0; j < l_nb_elem; ++j) {
                    *(l_dest_ptr++) = (OPJ_INT32)(*(l_src_ptr++));
                }
            } else {
                for (j = 0; j < l_nb_elem; ++j) {
                    *(l_dest_ptr++) = (*(l_src_ptr++)) & 0xffff;
                }
            }

            p_src = (OPJ_BYTE*) l_src_ptr;
        }
        break;
        case 4: {
            OPJ_INT32 * l_src_ptr = (OPJ_INT32 *) p_src;
            OPJ_INT32 * l_dest_ptr = l_tilec->data;

            for (j = 0; j < l_nb_elem; ++j) {
                *(l_dest_ptr++) = (OPJ_INT32)(*(l_src_ptr++));
            }

            p_src = (OPJ_BYTE*) l_src_ptr;
        }
        break;
        }

        ++l_img_comp;
        ++l_tilec;
    }

    return OPJ_TRUE;
}

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.