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FKIE_CVE-2026-93184

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18
Severity
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. 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22c944e440bc9b16c4ee409943d69bb8ef575c9e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b5c3f8015af442c2411722cf8c220cfbae271230
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e921cc73fae68ccee932ad0a4fb11d637557db0e
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/fsl/fsl_audmix.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b5c3f8015af442c2411722cf8c220cfbae271230",
              "status": "affected",
              "version": "be1df61cf06efb355c90702e46b8d46f055acb4e",
              "versionType": "git"
            },
            {
              "lessThan": "e921cc73fae68ccee932ad0a4fb11d637557db0e",
              "status": "affected",
              "version": "be1df61cf06efb355c90702e46b8d46f055acb4e",
              "versionType": "git"
            },
            {
              "lessThan": "22c944e440bc9b16c4ee409943d69bb8ef575c9e",
              "status": "affected",
              "version": "be1df61cf06efb355c90702e46b8d46f055acb4e",
              "versionType": "git"
            },
            {
              "lessThan": "3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71",
              "status": "affected",
              "version": "be1df61cf06efb355c90702e46b8d46f055acb4e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/fsl/fsl_audmix.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: fsl_audmix: rework runtime PM handling in probe\n\nAfter pm_runtime_enable() the AUDMIX block is powered off and stays\nsuspended until the first runtime resume. Register writes issued between\nprobe() and the first resume (e.g. from DAPM or ALSA control paths)\ntarget unpowered hardware and cause a system hang.\n\nFix this by calling pm_runtime_resume_and_get() immediately after\npm_runtime_enable() to power the hardware up and enable its clocks.\nRelease the reference afterwards with pm_runtime_put() to allow the\nruntime PM framework to suspend the device and switch the regmap to\ncache-only mode when idle.\n\nWhen CONFIG_PM is disabled or runtime PM is not enabled, pm_runtime_*\ncalls are stubs that do not power up the hardware. Handle this case\nexplicitly by calling fsl_audmix_runtime_resume() directly so the\nhardware is always initialised and its clocks are enabled, ensuring\nregister accesses succeed regardless of PM configuration."
    }
  ],
  "id": "CVE-2026-93184",
  "lastModified": "2026-09-17T17:18:14.430",
  "metrics": {},
  "published": "2026-09-17T17:18:14.430",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/22c944e440bc9b16c4ee409943d69bb8ef575c9e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b5c3f8015af442c2411722cf8c220cfbae271230"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e921cc73fae68ccee932ad0a4fb11d637557db0e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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