From: Josh Boyer <jwboyer-rxtnV0ftBwyoClj4AeEUq9i2O/JbrIOy@public.gmane.org>
To: Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Cc: Matthew Garrett
<matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>,
"Linux-Kernel@Vger. Kernel. Org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Kees Cook <keescook-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
"linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
James Morris <jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org>,
linux-security-module
<linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: Trusted kernel patchset for Secure Boot lockdown
Date: Thu, 27 Feb 2014 14:11:07 -0500 [thread overview]
Message-ID: <CA+5PVA4GNWFx5bDM912TYmDbMHmZpb2X=Tzo85mGEGATvbW70A@mail.gmail.com> (raw)
In-Reply-To: <20140227190710.GA4755-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
On Thu, Feb 27, 2014 at 2:07 PM, Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org> wrote:
> On Thu, Feb 27, 2014 at 01:04:34PM -0500, Josh Boyer wrote:
>> On Wed, Feb 26, 2014 at 3:11 PM, Matthew Garrett
>> <matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org> wrote:
>> > The conclusion we came to at Plumbers was that this patchset was basically
>> > fine but that Linus hated the name "securelevel" more than I hate pickled
>> > herring, so after thinking about this for a few months I've come up with
>> > "Trusted Kernel". This flag indicates that the kernel is, via some
>> > external mechanism, trusted and should behave that way. If firmware has
>> > some way to verify the kernel, it can pass that information on. If userspace
>> > has some way to verify the kernel, it can set the flag itself. However,
>> > userspace should not attempt to use the flag as a means to verify that the
>> > kernel was trusted - untrusted userspace could have set it on an untrusted
>> > kernel, but by the same metric an untrusted kernel could just set it itself.
>>
>> FWIW, I've been running a kernel using this patchset in place of the
>> patchset Fedora typically carries for this purpose for a bit. Things
>> appear to be working as expected and the protections remain the same.
>>
>> It would be really nice to get this set of patches in so some of the
>> other patches that depend on them can start being pushed as well.
>
> What other patches depend on this series? Why aren't they also in this
> series?
The patches we have to import certificates from the UEFI db and dbx
vars, and MokListRT and apply them to signed module verification.
Looking at them closely, there are pieces that could be sent now as
they are slightly orthogonal to what this patchset is doing, which is
probably why they aren't in this patchset to begin with. I'll have to
figure out which of those actually depend on anything in Matthew's
series.
josh
next prev parent reply other threads:[~2014-02-27 19:11 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
2014-02-26 21:11 ` Trusted kernel patchset for Secure Boot lockdown 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
[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 [this message]
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
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
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