CVE-2026-93184

/// Technical description

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 co

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References