This is a note to let you know that I've just added the patch titled
tpm: fix error return code in tpm2_get_cc_attrs_tbl()
to the 4.14-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-error-return-code-in-tpm2_get_cc_attrs_tbl.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1df83992d977355177810c2b711afc30546c81ce Mon Sep 17 00:00:00 2001
From: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
Date: Wed, 12 May 2021 21:39:26 +0800
Subject: tpm: fix error return code in tpm2_get_cc_attrs_tbl()
From: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
commit 1df83992d977355177810c2b711afc30546c81ce upstream.
If the total number of commands queried through TPM2_CAP_COMMANDS is
different from that queried through TPM2_CC_GET_CAPABILITY, it indicates
an unknown error. In this case, an appropriate error code -EFAULT should
be returned. However, we currently do not explicitly assign this error
code to 'rc'. As a result, 0 was incorrectly returned.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 58472f5cd4f6("tpm: validate TPM 2.0 commands")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm2-cmd.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -1051,6 +1051,7 @@ static int tpm2_get_cc_attrs_tbl(struct
if (nr_commands !=
be32_to_cpup((__be32 *)&buf.data[TPM_HEADER_SIZE + 5])) {
+ rc = -EFAULT;
tpm_buf_destroy(&buf);
goto out;
}
Patches currently in stable-queue which might be from thunder.leizhen@xxxxxxxxxx are
queue-4.14/tpm-fix-error-return-code-in-tpm2_get_cc_attrs_tbl.patch
