From: Matthew Garrett <matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>
To: "gnomes-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org"
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Subject: Re: Trusted kernel patchset for Secure Boot lockdown
Date: Thu, 13 Mar 2014 21:31:55 +0000 [thread overview]
Message-ID: <1394746314.27846.4.camel@x230> (raw)
In-Reply-To: <20140313212647.7412aadf-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
On Thu, 2014-03-13 at 21:26 +0000, One Thousand Gnomes wrote:
> > On the other hand, disabling CAP_SYS_RAWIO *definitely* breaks expected
> > functionality - firmware loading and the fibmap ioctl are probably the
> > most obvious. And changing the use of CAP_SYS_RAWIO potentially breaks
> > userspace expectations, so we're kind of stuck there.
>
> Actually I know how to describe the problem better.
>
> Whitelist v Blacklist.
>
> Going around adding extra cases for CAP_SYS_RAWIO is a fails insecure
> model. Going around adding CAP_SYS_RAWIO || CAP_SYS_RAWIO_SEC is a 'fails
> secure' case.
We've already been through this. We can't add new capabilities. It
breaks existing userspace.
--
Matthew Garrett <matthew.garrett@nebula.com>
prev parent reply other threads:[~2014-03-13 21:31 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
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 [this message]
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