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CVE-2026-72479NVD
Vulnerability Summary
In the Linux kernel, the following vulnerability has been resolved:
iio: accel: mma8452: handle I2C read error(s) in mma8452_read()
Currently, If i2c_smbus_read_i2c_block_data() fails but
mma8452_set_runtime_pm_state() succeeds, mma8452_read() returns 0.
As a result, the caller mma8452_read_raw() assumes the read was
successful and proceeds to use a buffer containing uninitialized
stack memory.
Add proper checking of the I2C read return value and propagate errors
to the caller.
iio: accel: mma8452: handle I2C read error(s) in mma8452_read()
Currently, If i2c_smbus_read_i2c_block_data() fails but
mma8452_set_runtime_pm_state() succeeds, mma8452_read() returns 0.
As a result, the caller mma8452_read_raw() assumes the read was
successful and proceeds to use a buffer containing uninitialized
stack memory.
Add proper checking of the I2C read return value and propagate errors
to the caller.
External References
- https://git.kernel.org/stable/c/1cddef80a180af74c33d2f26c962ce92b60fded4
- https://git.kernel.org/stable/c/5bdff291d20c31b365d9ddfe9c426fbfb41da5bb
- https://git.kernel.org/stable/c/b488055e81d9faaaf2f8aaff45f9944040ac4493
- https://git.kernel.org/stable/c/b4932fc325e84a3233413daf230b043818c8a824
- https://git.kernel.org/stable/c/eed69f8a10b82989ad732ace0fb43a9fb4e7fe35
- https://git.kernel.org/stable/c/f3d413e701c5e54bef736b638967724dda880365
- https://git.kernel.org/stable/c/f3d905ea1e4996d933074481e80d96ecd74a9904
- https://git.kernel.org/stable/c/f9ec3f3e9cf27dd06cd3725eeaa44e3ce46be893