From: Yves-Alexis Perez <corsac@debian.org>
To: Matthew Garrett <matthew.garrett@nebula.com>
Cc: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH 00/15] Secure boot policy support
Date: Sun, 17 Feb 2013 20:19:35 +0100 [thread overview]
Message-ID: <1361128775.20542.6.camel@scapa> (raw)
In-Reply-To: <1359391359-25783-1-git-send-email-matthew.garrett@nebula.com>
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On lun., 2013-01-28 at 11:42 -0500, Matthew Garrett wrote:
> Secure boot makes it possible to ensure that the on-disk representation of
> the kernel hasn't been modified. This can be sidestepped if the in-memory
> representation can be trivially altered. We currently have a large number
> of interfaces that permit root to perform effectively arbitrary
> modifications to the kernel, so this patchset introduces a new capability
> ("CAP_COMPROMISE_KERNEL") that controls whether or not these features are
> available. The aim is for this to be useful in any other situations where
> kernel integrity can be assured by some other mechanism rather than special
> casing UEFI.
>
Wouldn't it make sense to prevent writing to MSRs too? Something like
c903f0456bc69176912dee6dd25c6a66ee1aed00 with CAP_COMPROMISE_KERNEL?
Regards,
--
Yves-Alexis
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prev parent reply other threads:[~2013-02-17 19:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-28 16:42 [PATCH 00/15] Secure boot policy support Matthew Garrett
2013-01-28 16:42 ` [PATCH 01/15] Secure boot: Add new capability Matthew Garrett
2013-01-28 16:42 ` [PATCH 02/15] SELinux: define mapping for new Secure Boot capability Matthew Garrett
2013-01-28 16:42 ` [PATCH 03/15] Secure boot: Add a dummy kernel parameter that will switch on Secure Boot mode Matthew Garrett
2013-01-28 16:42 ` [PATCH 04/15] efi: Enable secure boot lockdown automatically when enabled in firmware Matthew Garrett
2013-01-28 16:42 ` [PATCH 05/15] PCI: Lock down BAR access in secure boot environments Matthew Garrett
2013-01-28 16:42 ` [PATCH 06/15] x86: Lock down IO port " Matthew Garrett
2013-01-28 16:42 ` [PATCH 07/15] ACPI: Limit access to custom_method Matthew Garrett
2013-01-28 16:42 ` [PATCH 08/15] asus-wmi: Restrict debugfs interface Matthew Garrett
2013-01-28 16:42 ` [PATCH 09/15] Restrict /dev/mem and /dev/kmem in secure boot setups Matthew Garrett
2013-01-28 16:42 ` [PATCH 10/15] acpi: Ignore acpi_rsdp kernel parameter in a secure boot environment Matthew Garrett
2013-02-17 9:00 ` Dave Young
2013-02-20 13:39 ` Josh Boyer
2013-01-28 16:42 ` [PATCH 11/15] Add EFI signature data types Matthew Garrett
2013-01-28 16:42 ` [PATCH 12/15] Add an EFI signature blob parser and key loader Matthew Garrett
2013-01-28 16:42 ` [PATCH 13/15] MODSIGN: Add module certificate blacklist keyring Matthew Garrett
2013-01-28 16:42 ` [PATCH 14/15] MODSIGN: Import certificates from UEFI Secure Boot Matthew Garrett
2013-01-28 16:42 ` [PATCH 15/15] MODSIGN: Always enforce module signing in a Secure Boot environment Matthew Garrett
2013-02-17 19:19 ` Yves-Alexis Perez [this message]
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