In ncurses 6.0, there is an attempted 0xffffffffffffffff access in the append_acs function of tinfo/parse_entry.c. It could lead to a remote denial of service attack if the terminfo library code is used to process untrusted terminfo data.
*** This bug has been marked as a duplicate of bug 1464686 ***
*** Bug 1464686 has been marked as a duplicate of this bug. ***