linux-kernel - Re: [PATCH V34 09/29] kexec_file: Restrict at runtime if the kernel is locked down

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LRH.2.21.1906280411370.18880@namei.org>
Date:   Fri, 28 Jun 2019 04:14:30 +1000 (AEST)
From:   James Morris <jmorris@...ei.org>
To:     Matthew Garrett <mjg59@...gle.com>
cc:     LSM List <linux-security-module@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>,
        Jiri Bohac <jbohac@...e.cz>,
        David Howells <dhowells@...hat.com>, kexec@...ts.infradead.org
Subject: Re: [PATCH V34 09/29] kexec_file: Restrict at runtime if the kernel
 is locked down

On Thu, 27 Jun 2019, Matthew Garrett wrote:

> By that metric, on a secure boot system how do we determine that code
> running in the firmware environment wasn't compromised before it
> launched the initial signed kernel?

Remote attestation tied to a hardware root of trust, before allowing 
access to any further resources.


-- 
James Morris
<jmorris@...ei.org>