Re: [PATCH v3 2/2] iio: imu: inv_mpu6050: validate ACPI object types in asus_acpi_get_sensor_info()

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 29 Oct 2026 11:08:29 +0000
Tristan Madani <tristmd@gmail.com> wrote:

> From: Tristan Madani <tristan@talencesecurity.com>
> 
> asus_acpi_get_sensor_info() iterates through a nested ACPI package
> structure without checking types at either level.  The outer object
> returned by acpi_evaluate_object() and each inner element must be
> validated as ACPI_TYPE_PACKAGE before accessing their package.count
> and package.elements members.
> 
> Use acpi_evaluate_object_typed() to validate the outer object type
> at evaluation time.  Add a type check for each inner element before
> accessing its package contents.  Also replace kfree() with
> ACPI_FREE() for the ACPI-allocated buffer.
> 
> Fixes: a35c5d1aa96a ("iio: imu: inv_mpu6050: Create mux clients for ACPI")
> Cc: stable@vger.kernel.org
As with the previous.  Hardening against buggy firmware isn't
a fix. It is however nice to have so with those tags dropped
I've applied this to the testing branch of iio.git

Thanks,

Jonathan