CVE-2019-6293

An issue was discovered in the function mark_beginning_as_normal in nfa.c
in flex 2.6.4. There is a stack exhaustion problem caused by the
mark_beginning_as_normal function making recursive calls to itself in
certain scenarios involving lots of ‘*’ characters. Remote attackers could
leverage this vulnerability to cause a denial-of-service.

Bugs

• <https://github.com/westes/flex/issues/414&gt;