CVE-2026-93184 is a vulnerability in Linux Kernel
Published on September 17, 2026
ASoC: fsl_audmix: rework runtime PM handling in probe
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.
Products Associated with CVE-2026-93184
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Affected Versions
Linux:- Version be1df61cf06efb355c90702e46b8d46f055acb4e and below b5c3f8015af442c2411722cf8c220cfbae271230 is affected.
- Version be1df61cf06efb355c90702e46b8d46f055acb4e and below e921cc73fae68ccee932ad0a4fb11d637557db0e is affected.
- Version be1df61cf06efb355c90702e46b8d46f055acb4e and below 22c944e440bc9b16c4ee409943d69bb8ef575c9e is affected.
- Version be1df61cf06efb355c90702e46b8d46f055acb4e and below 3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71 is affected.
- Version 5.2 is affected.
- Before 5.2 is unaffected.
- Version 6.12.110, <= 6.12.* is unaffected.
- Version 6.18.52, <= 6.18.* is unaffected.
- Version 7.2.6, <= 7.2.* is unaffected.
- Version 7.3-rc1, <= * is unaffected.