ASoC: fsl_audmix: rework runtime PM handling in probe

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93184
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:14 UTC
Updated2026-09-17 17:18:14 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected be1df61cf06efb355c90702e46b8d46f055acb4e b5c3f8015af442c2411722cf8c220cfbae271230 git Not specified
CNA Linux Linux affected be1df61cf06efb355c90702e46b8d46f055acb4e e921cc73fae68ccee932ad0a4fb11d637557db0e git Not specified
CNA Linux Linux affected be1df61cf06efb355c90702e46b8d46f055acb4e 22c944e440bc9b16c4ee409943d69bb8ef575c9e git Not specified
CNA Linux Linux affected be1df61cf06efb355c90702e46b8d46f055acb4e 3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71 git Not specified
CNA Linux Linux affected 5.2 Not specified
CNA Linux Linux unaffected 5.2 semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b5c3f8015af442c2411722cf8c220cfbae271230 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e921cc73fae68ccee932ad0a4fb11d637557db0e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/22c944e440bc9b16c4ee409943d69bb8ef575c9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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