In Netwide Assembler (NASM) 2.14rc0, there is a use-after-free in do_directive in asm/preproc.c that will cause a denial of service. Upstream bug: https://bugzilla.nasm.us/show_bug.cgi?id=3392430
Created nasm tracking bugs for this issue: Affects: fedora-all [bug 1529336]