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Patch "tpm: fix byte-order for the value read by tpm2_get_tpm_pt" has been added to the 4.7-stable tree

PATCH [email protected] 1 participant 1 message Oct 5, 2016

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This is a note to let you know that I've just added the patch titled

tpm: fix byte-order for the value read by tpm2_get_tpm_pt

to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
tpm-fix-byte-order-for-the-value-read-by-tpm2_get_tpm_pt.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 1b0612b04090e416828c0dd5ed197b0913d834a0 Mon Sep 17 00:00:00 2001

From: "[email protected]" <[email protected]>
Date: Thu, 14 Jul 2016 18:07:18 -0700
Subject: tpm: fix byte-order for the value read by tpm2_get_tpm_pt

From: [email protected] <[email protected]>

commit 1b0612b04090e416828c0dd5ed197b0913d834a0 upstream.

The result must be converted from BE byte order, which is used by the TPM2 protocol. This has not popped out because tpm2_get_tpm_pt() has been only used for probing.

Fixes 7a1d7e6dd76a ("tpm: TPM 2.0 baseline support")
Change-Id I7d71cd379b1a3b7659d20a1b6008216762596590
---
 drivers/char/tpm/tpm2-cmd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/char/tpm/tpm2-cmd.c +1 -1
@@ -703,7 +703,7 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip
 
 	rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), desc);
 	if (!rc)
-		*value = cmd.params.get_tpm_pt_out.value;
+		*value = be32_to_cpu(cmd.params.get_tpm_pt_out.value);
 
 	return rc;
 }

Patches currently in stable-queue which might be from [email protected] are

queue-4.7/tpm-fix-byte-order-for-the-value-read-by-tpm2_get_tpm_pt.patch