From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36126 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751272AbdHDUEC (ORCPT ); Fri, 4 Aug 2017 16:04:02 -0400 Subject: Patch "tpm: fix a kernel memory leak in tpm-sysfs.c" has been added to the 3.18-stable tree To: jarkko.sakkinen@linux.intel.com, gregkh@linuxfoundation.org, james.l.morris@oracle.com, jgunthorpe@obsidianresearch.com, stefanb@linux.vnet.ibm.com Cc: , From: Date: Fri, 04 Aug 2017 13:03:59 -0700 Message-ID: <150187703988223@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled tpm: fix a kernel memory leak in tpm-sysfs.c to the 3.18-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-a-kernel-memory-leak-in-tpm-sysfs.c.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 13b47cfcfc60495cde216eef4c01040d76174cbe Mon Sep 17 00:00:00 2001 From: Jarkko Sakkinen Date: Tue, 20 Jun 2017 11:38:02 +0200 Subject: tpm: fix a kernel memory leak in tpm-sysfs.c From: Jarkko Sakkinen commit 13b47cfcfc60495cde216eef4c01040d76174cbe upstream. While cleaning up sysfs callback that prints EK we discovered a kernel memory leak. This commit fixes the issue by zeroing the buffer used for TPM command/response. The leak happen when we use either tpm_vtpm_proxy, tpm_ibmvtpm or xen-tpmfront. Cc: stable@vger.kernel.org Fixes: 0883743825e3 ("TPM: sysfs functions consolidation") Reported-by: Jason Gunthorpe Tested-by: Stefan Berger Signed-off-by: Jarkko Sakkinen Signed-off-by: James Morris Signed-off-by: Greg Kroah-Hartman --- drivers/char/tpm/tpm-sysfs.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/char/tpm/tpm-sysfs.c +++ b/drivers/char/tpm/tpm-sysfs.c @@ -57,6 +57,8 @@ static ssize_t pubek_show(struct device struct tpm_chip *chip = dev_get_drvdata(dev); + memset(&tpm_cmd, 0, sizeof(tpm_cmd)); + tpm_cmd.header.in = tpm_readpubek_header; err = transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE, "attempting to read the PUBEK"); Patches currently in stable-queue which might be from jarkko.sakkinen@linux.intel.com are queue-3.18/tpm-fix-a-kernel-memory-leak-in-tpm-sysfs.c.patch