Re: [Qemu-devel] Virtio-net drivers immune to Nethammer?

[Stefan Hajnoczi]

On Mon, May 21, 2018 at 11:24:43PM +0000, procmem wrote:
> 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?

I have CCed Michael Tsirkin and Jason Wang, the virtio maintainers.

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

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