tpm: fix RC value check in tpm2_seal_trusted

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commit 7d761119a9 upstream.

The error code handling is broken as any error code that has the same
bits set as TPM_RC_HASH passes. Implemented tpm2_rc_value() helper to
parse the error value from FMT0 and FMT1 error codes so that these types
of mistakes are prevented in the future.

Fixes: 5ca4c20cfd ("keys, trusted: select hash algorithm for TPM2 chips")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jarkko Sakkinen 2017-01-25 23:00:22 +02:00 • committed by Greg Kroah-Hartman

parent a941f261c8

commit 326f9b0a39

2 changed files with 6 additions and 1 deletions

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5

drivers/char/tpm/tpm.h

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2

drivers/char/tpm/tpm2-cmd.c

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