---
id: CVE-2025-40098
title: >-
  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 …
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 …
severity: none
published: '2025-10-30'
updated: '2026-08-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-40098'
references:
  - url: 'https://git.kernel.org/stable/c/19129a365d2bd019fb60662b36b2655931997f12'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8527bbb33936340525a3504a00932b2f8fd75754'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b518386db2b993d786c431caa9f46ce063c5cb05'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00184
epssPercentile: 0.07023
ingestedAt: '2026-08-03T10:24:19.710Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.