static void sycc444_to_rgb(opj_image_t *img)
{
    int *d0, *d1, *d2, *r, *g, *b;
    const int *y, *cb, *cr;
    size_t maxw, maxh, max, i;
    int offset, upb;

    upb = (int)img->comps[0].prec;
    offset = 1 << (upb - 1);
    upb = (1 << upb) - 1;

    maxw = (size_t)img->comps[0].w;
    maxh = (size_t)img->comps[0].h;
    max = maxw * maxh;

    y = img->comps[0].data;
    cb = img->comps[1].data;
    cr = img->comps[2].data;

    d0 = r = (int*)opj_image_data_alloc(sizeof(int) * max);
    d1 = g = (int*)opj_image_data_alloc(sizeof(int) * max);
    d2 = b = (int*)opj_image_data_alloc(sizeof(int) * max);

    if (r == NULL || g == NULL || b == NULL) {
        goto fails;
    }

    for (i = 0U; i < max; ++i) {
        sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
        ++y;
        ++cb;
        ++cr;
        ++r;
        ++g;
        ++b;
    }
    opj_image_data_free(img->comps[0].data);
    img->comps[0].data = d0;
    opj_image_data_free(img->comps[1].data);
    img->comps[1].data = d1;
    opj_image_data_free(img->comps[2].data);
    img->comps[2].data = d2;
    img->color_space = OPJ_CLRSPC_SRGB;
    return;

fails:
    opj_image_data_free(r);
    opj_image_data_free(g);
    opj_image_data_free(b);
}/* sycc444_to_rgb() */

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.