On Sun, 2013-09-08 at 09:39 -0700, Greg KH wrote: > But I want, for other reasons (i.e. safety in layers), signed kernel > modules. I also might actually want some debugfs files in some random > driver (like this series removes).
You want a configuration that makes no sense. There's no reason that the kernel should make that easy. > Heck, look at Red Hat. They have been shipping signed kernel modules > for _years_ and yet they do not disable kexec. Have they been "doing it > wrong" all of this time? Perhaps people want signed modules just for > support reasons, not "security" reasons. Then they do what Red Hat does and don't set CONFIG_SIG_ENFORCE. > Don't take away those options. Where's the option to let me let unprivileged users set random MSRs? Where's the option to let root disable STRICT_DEVMEM at runtime? We don't offer these options because *they make no sense*. Locking your door while leaving your window open may make you feel better, but it doesn't improve the security of your house. -- Matthew Garrett <matthew.garr...@nebula.com>
