i2c: s3c24xx: check the size of the SMBUS message before using it

Browse source

commit c0128c7157 upstream.

The first byte of an i2c SMBUS message is the size, and it should be
verified to ensure that it is in the range of 0..I2C_SMBUS_BLOCK_MAX
before processing it.

This is the same logic that was added in commit a6e04f05ce ("i2c:
tegra: check msg length in SMBUS block read") to the i2c tegra driver.

Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Andi Shyti <andi.shyti@kernel.org>
Cc: stable <stable@kernel.org>
Assisted-by: gkh_clanker_2000
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/2026022314-rely-scrubbed-4839@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Greg Kroah-Hartman 2026-02-23 18:05:15 +01:00

parent 64c8553dec

commit 8f756a5964

1 changed files with 6 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

7

drivers/i2c/busses/i2c-s3c2410.c

View file