On Tue, Aug 30, 2016 at 07:39:50PM +0200, Phil Sutter wrote:
> As netlink_get_register() may return NULL, we must not pass the returned
> data unchecked to expr_set_type() as that will dereference it. Since the
> parser has failed at that point anyway, by returning early we can skip
> the useless statement allocation that follows in
> netlink_parse_ct_stmt().

I found a couple more spots, such as the payload stmt that was not
covered by this patch.

Attaching a new one based on this, looks good to you?

Anyway, this is very unlikely to happen: Only if we ever get more
registers in the kernel, given that expl_clone() relies on the
xzalloc() function that just stops execution under OOM.

Actually this brings an interesting issue that is that we need to
provide a way to describe the vm capabilities so we can extend things
in the future without breaking userspace.