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tpm: add check after commands attribs tab allocation 

commit f1689114ac upstream.

devm_kcalloc() can fail and return NULL so we need to check for that.

Cc: stable@vger.kernel.org
Fixes: 58472f5cd4 ("tpm: validate TPM 2.0 commands")
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Tadeusz Struk 2019-10-07 14:46:37 -07:00 committed by Greg Kroah-Hartman
parent 9e28d2e932
commit 12d9c03863
1 changed files with 4 additions and 0 deletions
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4
drivers/char/tpm/tpm2-cmd.c
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@ -939,6 +939,10 @@ static int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip)
chip->cc_attrs_tbl = devm_kcalloc(&chip->dev, 4, nr_commands,
GFP_KERNEL);
if (!chip->cc_attrs_tbl) {
rc = -ENOMEM;
goto out;
}
rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_GET_CAPABILITY);
if (rc)