netfilter: cthelper: add missing attribute validation for cthelper
BugLink: https://bugs.launchpad.net/bugs/1867903
commit
c049b3450072b8e3998053490e025839fecfef31 upstream.
Add missing attribute validation for cthelper
to the netlink policy.
Fixes: 12f7a505331e ("netfilter: add user-space connection tracking helper infrastructure")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>