From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50332 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752592AbdLDKyR (ORCPT ); Mon, 4 Dec 2017 05:54:17 -0500 Subject: Patch "eeprom: at24: check at24_read/write arguments" has been added to the 4.9-stable tree To: hkallweit1@gmail.com, brgl@bgdev.pl, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 04 Dec 2017 11:53:28 +0100 Message-ID: <1512384808223116@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 eeprom: at24: check at24_read/write arguments to the 4.9-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: eeprom-at24-check-at24_read-write-arguments.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From d9bcd462daf34aebb8de9ad7f76de0198bb5a0f0 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Fri, 24 Nov 2017 07:47:50 +0100 Subject: eeprom: at24: check at24_read/write arguments From: Heiner Kallweit commit d9bcd462daf34aebb8de9ad7f76de0198bb5a0f0 upstream. So far we completely rely on the caller to provide valid arguments. To be on the safe side perform an own sanity check. Signed-off-by: Heiner Kallweit Signed-off-by: Bartosz Golaszewski Signed-off-by: Greg Kroah-Hartman --- drivers/misc/eeprom/at24.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -507,6 +507,9 @@ static int at24_read(void *priv, unsigne if (unlikely(!count)) return count; + if (off + count > at24->chip.byte_len) + return -EINVAL; + /* * Read data from chip, protecting against concurrent updates * from this host, but not from other I2C masters. @@ -539,6 +542,9 @@ static int at24_write(void *priv, unsign if (unlikely(!count)) return -EINVAL; + if (off + count > at24->chip.byte_len) + return -EINVAL; + /* * Write data to chip, protecting against concurrent updates * from this host, but not from other I2C masters. Patches currently in stable-queue which might be from hkallweit1@gmail.com are queue-4.9/eeprom-at24-fix-reading-from-24mac402-24mac602.patch queue-4.9/eeprom-at24-check-at24_read-write-arguments.patch