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 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: eeprom-at24-check-at24_read-write-arguments.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From d9bcd462daf34aebb8de9ad7f76de0198bb5a0f0 Mon Sep 17 00:00:00 2001
From: Heiner Kallweit hkallweit1@gmail.com Date: Fri, 24 Nov 2017 07:47:50 +0100 Subject: eeprom: at24: check at24_read/write arguments
From: Heiner Kallweit hkallweit1@gmail.com
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 hkallweit1@gmail.com Signed-off-by: Bartosz Golaszewski brgl@bgdev.pl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/misc/eeprom/at24.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -257,6 +257,9 @@ static ssize_t at24_read(struct at24_dat 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. @@ -311,6 +314,9 @@ static ssize_t at24_eeprom_write(struct unsigned long timeout, write_time; unsigned next_page;
+ if (off + count > at24->chip.byte_len) + return -EINVAL; + /* Get corresponding I2C address and adjust offset */ client = at24_translate_offset(at24, &offset);
Patches currently in stable-queue which might be from hkallweit1@gmail.com are
queue-4.4/eeprom-at24-check-at24_read-write-arguments.patch