d4816edfe706497a8525480c1685ceb9871bc118 - linux

commit	d4816edfe706497a8525480c1685ceb9871bc118	[log] [tgz]
author	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>	Tue Aug 16 22:00:38 2016 +0300
committer	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>	Thu Sep 15 16:04:21 2016 +0300
tree	73c4afa873f131ab70998332b9f4ece9e6f83d24
parent	b7d7b28471072fc23e7b573aef89c14438092223 [diff]

tpm: fix a race condition in tpm2_unseal_trusted()

Unseal and load operations should be done as an atomic operation. This
commit introduces unlocked tpm_transmit() so that tpm2_unseal_trusted()
can do the locking by itself.

Fixes: 0fe5480303a1 ("keys, trusted: seal/unseal with TPM 2.0 chips")
Cc: stable@vger.kernel.org
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>

drivers/char/tpm/tpm-dev.c[diff]
drivers/char/tpm/tpm-interface.c[diff]
drivers/char/tpm/tpm-sysfs.c[diff]
drivers/char/tpm/tpm.h[diff]
drivers/char/tpm/tpm2-cmd.c[diff]

5 files changed

tree: 73c4afa873f131ab70998332b9f4ece9e6f83d24