Description:

This is paxctl utility for controlling PaX flags on a per binary
basis. This new PaX control program uses the PT_PAX_FLAGS marking
available in PaX patches after 2004.02.04 (highly recommended).

PaX is an intrusion prevention system that provides some protection
mechanisms against memory corruption bugs. Some applications are not
compatible with certain features (due to design or bad engineering)
and therefore they have to be exempted from certain enforcements. It
is also possible to use PaX in soft mode where none of the protection
mechanisms are active by default - here paxctl can be used to turn
them on for selected programs (e.g., network daemons, programs that
process network data such as mail clients, web browsers, etc).