static void t1_subset_end(void)
{
    if (t1_synthetic) {         /* copy to "dup /FontName get exch definefont pop" */
        while (!strstr(t1_line_array, "definefont")) {
            t1_getline();
            t1_putline();
        }
        while (!t1_end_eexec())
            t1_getline();       /* ignore the rest */
        t1_putline();           /* write "mark currentfile closefile" */
    } else
        while (!t1_end_eexec()) {       /* copy to "mark currentfile closefile" */
            t1_getline();
            t1_putline();
        }
    t1_stop_eexec();
    if (fixedcontent) {         /* copy 512 zeros (not needed for PDF) */
        while (!t1_cleartomark()) {
            t1_getline();
            t1_putline();
        }
        if (!t1_synthetic)      /* don't check "{restore}if" for synthetic fonts */
            t1_check_end();     /* write "{restore}if" if found */
    }
    get_length3();
}

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.