From: Matthew Garrett <matthew.garrett@nebula.com>
To: "david@lang.hm" <david@lang.hm>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"jmorris@namei.org" <jmorris@namei.org>,
"keescook@chromium.org" <keescook@chromium.org>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"hpa@zytor.com" <hpa@zytor.com>,
"jwboyer@fedoraproject.org" <jwboyer@fedoraproject.org>,
"gnomes@lxorguk.ukuu.org.uk" <gnomes@lxorguk.ukuu.org.uk>,
"linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Subject: Re: Trusted kernel patchset for Secure Boot lockdown
Date: Fri, 14 Mar 2014 20:43:57 +0000 [thread overview]
Message-ID: <1394829836.1286.5.camel@x230> (raw)
In-Reply-To: <alpine.DEB.2.02.1403141335590.12964@nftneq.ynat.uz>
On Fri, 2014-03-14 at 13:37 -0700, David Lang wrote:
> On Fri, 14 Mar 2014, Matthew Garrett wrote:
> > As an example, imagine a platform with the bootloader and kernel on
> > read-only media. The platform can assert that the kernel is trusted even
> > if there's no measurement of the kernel.
>
> Trusted by who?
The platform. If you don't trust the platform's ability to make that
decision then that's something that informs your own behaviour, not the
platform's.
> Alan is saying measured because then if it matches what the owner of that device
> intends it's trusted, but just because you trust it doesn't mean that I trust
> it, and it doesn't mean that the russian government should trust it, etc.
"Measured" has a specific meaning. If you trust a file based on its
source rather than some property of the file itself, you're not
measuring it.
--
Matthew Garrett <matthew.garrett@nebula.com>
next prev parent reply other threads:[~2014-03-14 20:43 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-26 20:11 Trusted kernel patchset for Secure Boot lockdown Matthew Garrett
2014-02-26 20:11 ` [PATCH 01/12] Add support for indicating that the booted kernel is externally trusted Matthew Garrett
[not found] ` <1393445473-15068-2-git-send-email-matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>
2014-02-27 19:02 ` Kees Cook
2014-03-31 14:49 ` Pavel Machek
2014-02-26 20:11 ` [PATCH 03/12] PCI: Lock down BAR access when trusted_kernel is true Matthew Garrett
2014-02-26 20:11 ` [PATCH 04/12] x86: Lock down IO port " Matthew Garrett
2014-02-26 20:11 ` [PATCH 05/12] Restrict /dev/mem and /dev/kmem " Matthew Garrett
2014-02-26 20:11 ` [PATCH 06/12] acpi: Limit access to custom_method if " Matthew Garrett
2014-02-26 20:11 ` [PATCH 07/12] acpi: Ignore acpi_rsdp kernel parameter when " Matthew Garrett
2014-02-26 20:11 ` [PATCH 08/12] kexec: Disable at runtime if " Matthew Garrett
2014-02-26 20:11 ` [PATCH 10/12] x86: Restrict MSR access when " Matthew Garrett
2014-02-26 20:11 ` [PATCH 11/12] asus-wmi: Restrict debugfs interface " Matthew Garrett
[not found] ` <1393445473-15068-1-git-send-email-matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>
2014-02-26 20:11 ` [PATCH 02/12] Enforce module signatures when trusted kernel is enabled Matthew Garrett
2014-02-26 20:11 ` [PATCH 09/12] uswsusp: Disable when trusted_kernel is true Matthew Garrett
2014-03-31 14:49 ` Pavel Machek
2014-02-26 20:11 ` [PATCH 12/12] Add option to automatically set trusted_kernel when in Secure Boot mode Matthew Garrett
[not found] ` <1393445473-15068-13-git-send-email-matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>
2014-02-26 22:41 ` One Thousand Gnomes
2014-02-26 22:47 ` H. Peter Anvin
2014-02-26 22:48 ` Matthew Garrett
2014-02-27 18:48 ` Kees Cook
2014-02-27 18:04 ` Trusted kernel patchset for Secure Boot lockdown Josh Boyer
2014-02-27 19:07 ` Greg KH
[not found] ` <20140227190710.GA4755-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2014-02-27 19:11 ` Josh Boyer
2014-02-28 12:50 ` Josh Boyer
2014-02-28 3:03 ` James Morris
[not found] ` <alpine.LRH.2.02.1402281402090.26521-CK9fWmtY32x9JUWOpEiw7w@public.gmane.org>
2014-02-28 4:52 ` Matthew Garrett
2014-03-13 5:01 ` Matthew Garrett
2014-03-13 6:22 ` Kees Cook
2014-03-13 9:33 ` James Morris
2014-03-13 10:12 ` One Thousand Gnomes
[not found] ` <20140313101235.753c3ec0-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-13 15:54 ` H. Peter Anvin
2014-03-13 15:59 ` Matthew Garrett
2014-03-13 21:24 ` One Thousand Gnomes
2014-03-13 21:28 ` H. Peter Anvin
[not found] ` <532222E1.2020405-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-03-13 21:32 ` Matthew Garrett
[not found] ` <20140313212450.67f1de8e-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-13 21:30 ` Matthew Garrett
2014-03-13 23:21 ` One Thousand Gnomes
[not found] ` <20140313232140.03bdaac3-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-14 1:57 ` Matthew Garrett
[not found] ` <1394762250.6416.24.camel-+5W/JHIUVxg@public.gmane.org>
2014-03-14 12:22 ` One Thousand Gnomes
[not found] ` <20140314122231.17b9ca8a-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-14 12:51 ` Matthew Garrett
2014-03-14 15:23 ` Kees Cook
2014-03-14 15:46 ` Matthew Garrett
2014-03-14 15:54 ` Kees Cook
[not found] ` <CAGXu5j+3vVKhFPOsArYddA+QqhvVUunj8eYOF799rDv=3MGtyg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-03-14 15:58 ` Matthew Garrett
[not found] ` <CAGXu5jLZcWh5WD0L8s3Q-GXdXCMnA57qtjfdFfQbv0fxYcuCTQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-03-14 16:28 ` One Thousand Gnomes
2014-03-14 17:06 ` One Thousand Gnomes
2014-03-14 18:11 ` Matthew Garrett
[not found] ` <1394820664.26846.18.camel-OCPKQ0O/skbnpfJQjCtNlyaZ0x2G8ZQoAL8bYrjMMd8@public.gmane.org>
2014-03-14 19:24 ` Matthew Garrett
2014-03-14 20:37 ` David Lang
2014-03-14 20:43 ` Matthew Garrett [this message]
2014-03-14 21:58 ` One Thousand Gnomes
[not found] ` <20140314215854.50ec186a-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-14 22:04 ` Matthew Garrett
2014-03-14 21:48 ` One Thousand Gnomes
2014-03-14 21:56 ` Matthew Garrett
2014-03-14 22:08 ` One Thousand Gnomes
[not found] ` <20140314220840.29a12171-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-14 22:15 ` Matthew Garrett
2014-03-14 22:31 ` One Thousand Gnomes
2014-03-14 22:52 ` Matthew Garrett
[not found] ` <20140314223150.0b49723e-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-19 19:50 ` Kees Cook
2014-03-14 23:18 ` Theodore Ts'o
2014-03-15 0:15 ` One Thousand Gnomes
[not found] ` <20140314231832.GA653-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2014-03-19 17:49 ` Florian Weimer
2014-03-19 20:16 ` Kees Cook
[not found] ` <CAGXu5j+JXy4EbHxu+8twWo=3gqyLJ6hZGPbgsdf3t8YhUA-bWw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-03-20 14:47 ` One Thousand Gnomes
2014-03-20 14:55 ` tytso
[not found] ` <20140320145507.GB20618-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2014-03-20 17:12 ` Matthew Garrett
2014-03-20 18:13 ` One Thousand Gnomes
2014-03-13 21:26 ` One Thousand Gnomes
[not found] ` <20140313212647.7412aadf-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-03-13 21:31 ` Matthew Garrett
2014-02-26 21:11 ` Kees Cook
[not found] ` <CAGXu5j+b49grru-=DTRC0wx5LTOHN_jKL0Q++uW0Mzy+BxDf4w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-26 22:21 ` One Thousand Gnomes
2014-02-27 9:54 ` Alon Ziv
2014-03-19 17:42 ` Florian Weimer
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