Vulnerability-Lookup

GHSA-C37F-RQ9M-6C5R

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

ASoC: fsl_micfil: balance mclk enable/disable

hw_params() enables mclk unconditionally and hw_free() disables it unconditionally, but the PCM core does not guarantee 1:1 pairing: hw_free() can run without hw_params(), and hw_params() can be called multiple times from the SETUP state. This triggers an "already disabled" WARN() in the first case and leaks an enable reference in the second, leaving the clock ungateable.

Guard both sides with the existing mclk_flag, as fsl_sai.c does with mclk_streams.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98093"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:39Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: fsl_micfil: balance mclk enable/disable\n\nhw_params() enables mclk unconditionally and hw_free() disables it\nunconditionally, but the PCM core does not guarantee 1:1 pairing:\nhw_free() can run without hw_params(), and hw_params() can be called\nmultiple times from the SETUP state. This triggers an \"already\ndisabled\" WARN() in the first case and leaks an enable reference in\nthe second, leaving the clock ungateable.\n\nGuard both sides with the existing mclk_flag, as fsl_sai.c does with\nmclk_streams.",
  "id": "GHSA-c37f-rq9m-6c5r",
  "modified": "2026-09-25T12:31:36Z",
  "published": "2026-09-25T12:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98093"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/470db2026a435b79f7ecb4d65523ea16a99d55d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3dbccfe6afa7b9a6a7ed65cfaa76a47fa050a56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa1bbe3534499dd89d3b0b941d6dd4ddb70c31b5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98093 (GCVE-0-2026-98093)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:24 – Updated: 2026-09-25 10:24

Title

ASoC: fsl_micfil: balance mclk enable/disable

Summary

In the Linux kernel, the following vulnerability has been resolved: ASoC: fsl_micfil: balance mclk enable/disable hw_params() enables mclk unconditionally and hw_free() disables it unconditionally, but the PCM core does not guarantee 1:1 pairing: hw_free() can run without hw_params(), and hw_params() can be called multiple times from the SETUP state. This triggers an "already disabled" WARN() in the first case and leaks an enable reference in the second, leaving the clock ungateable. Guard both sides with the existing mclk_flag, as fsl_sai.c does with mclk_streams.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/470db2026a435b79f…
https://git.kernel.org/stable/c/fa1bbe3534499dd89…
https://git.kernel.org/stable/c/d3dbccfe6afa7b9a6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b47024dc624bcffb89d238f4a5b490363cea2a1e , < 470db2026a435b79f7ecb4d65523ea16a99d55d8 (git) Affected: b47024dc624bcffb89d238f4a5b490363cea2a1e , < fa1bbe3534499dd89d3b0b941d6dd4ddb70c31b5 (git) Affected: b47024dc624bcffb89d238f4a5b490363cea2a1e , < d3dbccfe6afa7b9a6a7ed65cfaa76a47fa050a56 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/fsl/fsl_micfil.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "470db2026a435b79f7ecb4d65523ea16a99d55d8",
              "status": "affected",
              "version": "b47024dc624bcffb89d238f4a5b490363cea2a1e",
              "versionType": "git"
            },
            {
              "lessThan": "fa1bbe3534499dd89d3b0b941d6dd4ddb70c31b5",
              "status": "affected",
              "version": "b47024dc624bcffb89d238f4a5b490363cea2a1e",
              "versionType": "git"
            },
            {
              "lessThan": "d3dbccfe6afa7b9a6a7ed65cfaa76a47fa050a56",
              "status": "affected",
              "version": "b47024dc624bcffb89d238f4a5b490363cea2a1e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/fsl/fsl_micfil.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc3",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: fsl_micfil: balance mclk enable/disable\n\nhw_params() enables mclk unconditionally and hw_free() disables it\nunconditionally, but the PCM core does not guarantee 1:1 pairing:\nhw_free() can run without hw_params(), and hw_params() can be called\nmultiple times from the SETUP state. This triggers an \"already\ndisabled\" WARN() in the first case and leaks an enable reference in\nthe second, leaving the clock ungateable.\n\nGuard both sides with the existing mclk_flag, as fsl_sai.c does with\nmclk_streams."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:24:25.285Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/470db2026a435b79f7ecb4d65523ea16a99d55d8"
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        {
          "url": "https://git.kernel.org/stable/c/fa1bbe3534499dd89d3b0b941d6dd4ddb70c31b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3dbccfe6afa7b9a6a7ed65cfaa76a47fa050a56"
        }
      ],
      "title": "ASoC: fsl_micfil: balance mclk enable/disable",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98093",
    "datePublished": "2026-09-25T10:24:25.285Z",
    "dateReserved": "2026-09-25T10:19:56.076Z",
    "dateUpdated": "2026-09-25T10:24:25.285Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-C37F-RQ9M-6C5R

CVE-2026-98093 (GCVE-0-2026-98093)

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