Vulnerability CVE-2024-43818
Published: 2024-08-17

Description:
In the Linux kernel, the following vulnerability has been resolved:

ASoC: amd: Adjust error handling in case of absent codec device

acpi_get_first_physical_node() can return NULL in several cases (no such
device, ACPI table error, reference count drop to 0, etc).
Existing check just emit error message, but doesn't perform return.
Then this NULL pointer is passed to devm_acpi_dev_add_driver_gpios()
where it is dereferenced.

Adjust this error handling by adding error code return.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

 References:
https://git.kernel.org/stable/c/1ba9856cf7f6492b47c1edf853137f320d583db5
https://git.kernel.org/stable/c/99b642dac24f6d09ba3ebf1d690be8aefff86164
https://git.kernel.org/stable/c/b1173d64edd276c957b6d09e1f971c85b38f1519
https://git.kernel.org/stable/c/5080808c3339de2220c602ab7c7fa23dc6c1a5a3
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