CVE-2025-40098

Summary

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

ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_get_acpi_mute_state()

Return value of a function acpi_evaluate_dsm() is dereferenced without checking for NULL, but it is usually checked for this function.

acpi_evaluate_dsm() may return NULL, when acpi_evaluate_object() returns acpi_status other than ACPI_SUCCESS, so add a check to prevent the crach.

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

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/b518386db2b993d786c431caa9f46ce063c5cb05
• https://git.kernel.org/stable/c/8527bbb33936340525a3504a00932b2f8fd75754

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