On Wed, Jun 11, 2014 at 12:17:53AM +0300, Dmitry Kasatkin wrote: > It is probably just a paranoia... > Kconfig MODULE_SIG_UEFI should tell about threat of loading kernel > modules from NSA or Lenovo signed by MS or Lenovo keys.. > > This hole is opened without warning...
It's not typically a hole. If an attacker has root they can just replace your bootloader with one signed by a trusted key and then have that modify the kernel before booting it. If you're using a TPM then you can mitigate this, but if you have a TPM then you're already performing some extra steps during the boot process. Just add a sysfs knob that lets you drop the db keys and incorporate that into the TPM management code. -- Matthew Garrett | mj...@srcf.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
