Jonas Malaco a37960df7e eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX ... commit c0689e46be upstream. Commit effa453168 ("i2c: i801: Don't silently correct invalid transfer size") revealed that ee1004_eeprom_read() did not properly limit how many bytes to read at once. In particular, i2c_smbus_read_i2c_block_data_or_emulated() takes the length to read as an u8. If count == 256 after taking into account the offset and page boundary, the cast to u8 overflows. And this is common when user space tries to read the entire EEPROM at once. To fix it, limit each read to I2C_SMBUS_BLOCK_MAX (32) bytes, already the maximum length i2c_smbus_read_i2c_block_data_or_emulated() allows. Fixes: effa453168 ("i2c: i801: Don't silently correct invalid transfer size") Cc: stable@vger.kernel.org Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Jonas Malaco <jonas@protocubo.io> Link: https://lore.kernel.org/r/20220203165024.47767-1-jonas@protocubo.io Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-16 12:54:27 +01:00
..
at24.c	misc: eeprom: at24: Always append device id even if label property is set.	2021-07-28 14:35:46 +02:00
at25.c	eeprom: at25: set type id as EEPROM	2020-09-17 18:47:20 +02:00
digsy_mtc_eeprom.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
ee1004.c	eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX	2022-02-16 12:54:27 +01:00
eeprom.c	misc: eeprom: use helper to get i2c_client from kobj	2020-09-21 11:45:43 +02:00
eeprom_93cx6.c	misc: eeprom: eeprom_93cx6: Repair function arg descriptions	2020-06-29 18:45:52 +02:00
eeprom_93xx46.c	misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eeprom	2021-03-11 14:17:27 +01:00
idt_89hpesx.c	eeprom: idt_89hpesx: Restore printing the unsupported fwnode name	2021-07-14 16:56:44 +02:00
Kconfig	eeprom: Deprecate the legacy eeprom driver	2019-09-04 09:57:35 +02:00
Makefile
max6875.c	misc: eeprom: max6875: convert to i2c_new_dummy_device	2019-07-25 10:06:54 +02:00