asm/labels.c in Netwide Assembler (NASM) is prone to NULL Pointer Dereference, which allows the attacker to cause a denial of service via a crafted file.
https://www.exploit-db.com/exploits/46726/
https://fakhrizulkifli.github.io/CVE-2018-16517.html
https://bugzilla.nasm.us/show_bug.cgi?id=3392513
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html