---
id: CVE-2026-93184
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: fsl_audmix: rework runtime PM handling in probe

  After pm_runtime_enable() the AUDMIX block is powered off and stays
  suspended until the first runtime resume
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: fsl_audmix: rework runtime PM handling in probe

  After pm_runtime_enable() the AUDMIX block is powered off and stays
  suspended until the first runtime resume. Reg…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= be1df61cf06efb355c90702e46b8d46f055acb4e <
    b5c3f8015af442c2411722cf8c220cfbae271230
  - >-
    Linux >= be1df61cf06efb355c90702e46b8d46f055acb4e <
    e921cc73fae68ccee932ad0a4fb11d637557db0e
  - >-
    Linux >= be1df61cf06efb355c90702e46b8d46f055acb4e <
    22c944e440bc9b16c4ee409943d69bb8ef575c9e
  - >-
    Linux >= be1df61cf06efb355c90702e46b8d46f055acb4e <
    3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71
  - Linux 5.2
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:18:14.430'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93184'
references:
  - url: 'https://git.kernel.org/stable/c/22c944e440bc9b16c4ee409943d69bb8ef575c9e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b5c3f8015af442c2411722cf8c220cfbae271230'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e921cc73fae68ccee932ad0a4fb11d637557db0e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.727Z'
epss: 0.00209
epssPercentile: 0.09865
---

## Overview

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

ASoC: fsl_audmix: rework runtime PM handling in probe

After pm_runtime_enable() the AUDMIX block is powered off and stays
suspended until the first runtime resume. Register writes issued between
probe() and the first resume (e.g. from DAPM or ALSA control paths)
target unpowered hardware and cause a system hang.

Fix this by calling pm_runtime_resume_and_get() immediately after
pm_runtime_enable() to power the hardware up and enable its clocks.
Release the reference afterwards with pm_runtime_put() to allow the
runtime PM framework to suspend the device and switch the regmap to
cache-only mode when idle.

When CONFIG_PM is disabled or runtime PM is not enabled, pm_runtime_*
calls are stubs that do not power up the hardware. Handle this case
explicitly by calling fsl_audmix_runtime_resume() directly so the
hardware is always initialised and its clocks are enabled, ensuring
register accesses succeed regardless of PM configuration.

## Remediation

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