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From: procmem <procmem@riseup.net>
To: qemu-devel@nongnu.org, whonix-devel@whonix.org
Subject: [Qemu-devel] Virtio-net drivers immune to Nethammer?
Date: Mon, 21 May 2018 23:24:43 +0000	[thread overview]
Message-ID: <40602400-cae4-e175-e7ce-10ac70ba52f5@riseup.net> (raw)



Hi I'm a privacy distro maintainer investigating the implications of the
newly published nethammer attack [0] on KVM guests particularly the
virtio-net drivers. The summary of the paper is that rowhammer can be
remotely triggered by feeding susceptible* network driver crafted
traffic. This attack can do all kinds of nasty things such as modifying
SSL certs on the victim system.

* Susceptible drivers are those relying on Intel CAT, uncached memory or
the clflush instruction.

My question is, do virtio-net drivers do any of these things?

***

[0] https://arxiv.org/abs/1805.04956

             reply	other threads:[~2018-05-21 23:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-21 23:24 procmem [this message]
2018-06-01 11:34 ` [Qemu-devel] Virtio-net drivers immune to Nethammer? Stefan Hajnoczi
2018-06-01 13:15   ` procmem
2018-06-01 15:58     ` Michael S. Tsirkin
2018-06-01 18:54       ` Dr. David Alan Gilbert
2018-06-02  3:04         ` procmem
2018-06-02  3:08       ` procmem
2018-06-03 16:10         ` Michael S. Tsirkin

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