NULL Pointer Dereference
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in expand_mmac_params() in modules/preprocs/nasm/nasm-pp.c.
CWE-476 - NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.