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Date:   Wed, 25 Oct 2017 07:17:17 -0700
From:   Matthew Garrett <>
To:     Jarkko Sakkinen <>
Cc:     linux-integrity <>,
        Kari Hiitola <>,,
Subject: Re: Fixing CVE-2017-15361

On Wed, Oct 25, 2017 at 6:44 AM, Jarkko Sakkinen
<> wrote:
> I'm implementing a fix for CVE-2017-15361 that simply blacklists
> vulnerable FW versions. I think this is the only responsible action from
> my side that I can do.

I'm not sure this is ideal - do Infineon have any Linux tooling for
performing firmware updates, and if so will that continue working if
the device is blacklisted? It's also a poor user experience to have
systems using TPM-backed disk encryption keys suddenly rendered
unbootable, and making it as easy as possible for people to do an
upgrade and then re-seal secrets with new keys feels like the correct

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