linux-kernel - Re: [PATCH v5 6/7] tpm: ensure that the output of PCR read contains the correct digest size

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Message-ID: <20181116134153.GD4163@linux.intel.com>
Date:   Fri, 16 Nov 2018 15:41:53 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Roberto Sassu <roberto.sassu@...wei.com>
Cc:     zohar@...ux.ibm.com, david.safford@...com, monty.wiseman@...com,
        linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, silviu.vlasceanu@...wei.com,
        stable@...r.kernel.org
Subject: Re: [PATCH v5 6/7] tpm: ensure that the output of PCR read contains
 the correct digest size

On Wed, Nov 14, 2018 at 04:31:07PM +0100, Roberto Sassu wrote:
> This patch protects against data corruption that could happen in the bus,
> by checking that that the digest size returned by the TPM during a PCR read
> matches the size of the algorithm passed to tpm2_pcr_read().
> 
> This check is performed after information about the PCR banks has been
> retrieved.
> 
> Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> Cc: stable@...r.kernel.org

Missing fixes tag.

/Jarkko