From: Pavel Machek <pavel@ucw.cz>
To: Evan Green <evgreen@chromium.org>
Cc: linux-kernel@vger.kernel.org,
Matthew Garrett <mgarrett@aurora.tech>,
dlunev@google.com, zohar@linux.ibm.com, jejb@linux.ibm.com,
linux-integrity@vger.kernel.org, corbet@lwn.net,
rjw@rjwysocki.net, gwendal@chromium.org, jarkko@kernel.org,
linux-pm@vger.kernel.org, David Howells <dhowells@redhat.com>,
Hao Wu <hao.wu@rubrik.com>, James Morris <jmorris@namei.org>,
Jason Gunthorpe <jgg@ziepe.ca>, Len Brown <len.brown@intel.com>,
Matthew Garrett <matthewgarrett@google.com>,
Peter Huewe <peterhuewe@gmx.de>,
"Rafael J. Wysocki" <rafael@kernel.org>,
"Serge E. Hallyn" <serge@hallyn.com>, axelj <axelj@axis.com>,
keyrings@vger.kernel.org, linux-doc@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH 00/10] Encrypted Hibernation
Date: Fri, 6 May 2022 18:08:08 +0200 [thread overview]
Message-ID: <20220506160807.GA1060@bug> (raw)
In-Reply-To: <20220504232102.469959-1-evgreen@chromium.org>
Hi!
> We are exploring enabling hibernation in some new scenarios. However,
> our security team has a few requirements, listed below:
> 1. The hibernate image must be encrypted with protection derived from
> both the platform (eg TPM) and user authentication data (eg
> password).
> 2. Hibernation must not be a vector by which a malicious userspace can
> escalate to the kernel.
Can you (or your security team) explain why requirement 2. is needed?
On normal systems, trusted userspace handles kernel upgrades (for example),
so it can escalate to kernel priviledges.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2022-05-06 16:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-04 23:20 [PATCH 00/10] Encrypted Hibernation Evan Green
2022-05-04 23:20 ` [PATCH 04/10] security: keys: trusted: Allow storage of PCR values in creation data Evan Green
2022-08-02 23:00 ` Eric Biggers
2022-08-03 20:48 ` Evan Green
2022-05-06 16:08 ` Pavel Machek [this message]
2022-05-09 16:43 ` [PATCH 00/10] Encrypted Hibernation Evan Green
2022-05-17 16:06 ` Rafael J. Wysocki
2022-05-17 17:34 ` Evan Green
2022-06-16 15:42 ` Evan Green
2022-08-01 22:32 ` Evan Green
2022-08-02 18:36 ` Matthew Garrett
2022-08-04 0:59 ` Jarkko Sakkinen
2022-08-04 21:55 ` Evan Green
2022-08-06 18:21 ` Jarkko Sakkinen
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