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Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <4136.1522452584@warthog.procyon.org.uk> <186aeb7e-1225-4bb8-3ff5-863a1cde86de@kernel.org> <30459.1522739219@warthog.procyon.org.uk> To: Andy Lutomirski Cc: dhowells@redhat.com, Matthew Garrett , Ard Biesheuvel , James Morris , Alan Cox , Linus Torvalds , Greg Kroah-Hartman , Linux Kernel Mailing List , Justin Forbes , linux-man , joeyli , LSM List , Linux API , Kees Cook , linux-efi Subject: Re: [GIT PULL] Kernel lockdown for secure boot MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <9757.1522775763.1@warthog.procyon.org.uk> Date: Tue, 03 Apr 2018 18:16:03 +0100 Message-ID: <9758.1522775763@warthog.procyon.org.uk> Sender: owner-linux-security-module@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Andy Lutomirski wrote: > > A kernel that allows users arbitrary access to ring 0 is just an > > overfeatured bootloader. Why would you want secure boot in that case? > > To get a chain of trust. You don't have a chain of trust that you can trust in that case. David