CVEvulnerability
CVE-2023-53834
- Status
- Deferred
- Published
- 2025-12-09
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
iio: adc: ina2xx: avoid NULL pointer dereference on OF device match
The affected lines were resulting in a NULL pointer dereference on our
platform because the device tree contained the following list of
compatible strings:
power-sensor@40 {
compatible = "ti,ina232", "ti,ina231";
...
};
Since the driver doesn't declare a compatible string "ti,ina232", the OF
matching succeeds on "ti,ina231". But the I2C device ID info is
populated via the first compatible string, cf. modalias population in
of_i2c_get_board_info(). Since there is no "ina232" entry in the legacy
I2C device ID table either, the struct i2c_device_id *id pointer in the
probe function is NULL.
Fix this by using the already populated type variable instead, which
points to the proper driver data. Since the name is also wanted, add a
generic one to the ina2xx_config table.
References
- https://git.kernel.org/stable/c/13f3ce53b65aa8b44cad7039d31e62c9ffd6c5d1 git.kernel.org
- https://git.kernel.org/stable/c/77b689cc27d489b75d33f1a368356d70eb0ce08c git.kernel.org
- https://git.kernel.org/stable/c/a41e19cc0d6b6a445a4133170b90271e4a2553dc git.kernel.org
- https://git.kernel.org/stable/c/a8e2ae6296d56478fb98ae7f739846ed121f154f git.kernel.org