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Date:   Wed, 5 Jun 2019 17:33:44 +0300
From:   Jarkko Sakkinen <>
To:     Chris Coulson <>
        Peter Huewe <>,
        Jason Gunthorpe <>,
        Matthew Garrett <>,
        Bartosz Szczepanek <>,
        Roberto Sassu <>,
        Ard Biesheuvel <>,
Subject: Re: [PATCH 1/1] tpm: Don't dereference event after it's unmapped in

On Wed, Jun 05, 2019 at 12:04:33AM +0100, Chris Coulson wrote:
> The pointer to the event header is dereferenced on each loop iteration in
> order to obtain the digest count, but when called from
> tpm2_calc_event_log_size, the event header is unmapped on the first
> iteration of the loop. This results in an invalid access for on subsequent
> loop iterations for log entries that have more than one digest.
> Signed-off-by: Chris Coulson <>

Reviewed-by: Jarkko Sakkinen <>


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