In Netwide Assembler (NASM) 2.14rc0, there is an illegal address access in the function paste_tokens() in preproc.c, aka a NULL pointer dereference. It will lead to remote denial of service.Referenceshttps://bugzilla.nasm.us/show_bug.cgi?id=3392423https://usn.ubuntu.com/3694-1/https://security.gentoo.org/glsa/201903-19