Note that the hardening is not activated by default, it adds defconfig
option to enable it.
Since it introduces a breaking change, it shouldn't be enabled in LTS
release by default.
This patch makes busybox cpio equivalent in this release to what is
currently in master and in kirkstone.
Also note that gnu cpio also does not have this hardening, but the CVE
is created only against busybox.
Signed-off-by: Peter Marko <peter.marko@siemens.com> Signed-off-by: Steve Sakoman <steve@sakoman.com>