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GHSA-HC5W-CRXQ-XMG4

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:

wifi: mt76: mt7921: validate CLC firmware records

The CLC region is supplied by firmware, but the loader trusts the region count and each record length. A malformed image can make the region table pointer precede the firmware buffer, make the record loop fail to advance, or index phy->clc past its end. Validate the table and record bounds before dereferencing or copying.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98159"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:47Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: validate CLC firmware records\n\nThe CLC region is supplied by firmware, but the loader trusts the\nregion count and each record length. A malformed image can make the\nregion table pointer precede the firmware buffer, make the record loop\nfail to advance, or index phy-\u003eclc past its end. Validate the table and\nrecord bounds before dereferencing or copying.",
  "id": "GHSA-hc5w-crxq-xmg4",
  "modified": "2026-09-25T12:31:39Z",
  "published": "2026-09-25T12:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98159"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3896be051e928c891922d91de94c99519d215dff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c505e2af16a9320f4355218394a955fbbc65322"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/602a950134ee2940136f60797e4457c3983b06ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9417c5818a0146980c2608fda94c908e604eb033"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98159 (GCVE-0-2026-98159)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:36 – Updated: 2026-09-25 10:36

Title

wifi: mt76: mt7921: validate CLC firmware records

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: validate CLC firmware records The CLC region is supplied by firmware, but the loader trusts the region count and each record length. A malformed image can make the region table pointer precede the firmware buffer, make the record loop fail to advance, or index phy->clc past its end. Validate the table and record bounds before dereferencing or copying.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/602a950134ee29401…
https://git.kernel.org/stable/c/3896be051e928c891…
https://git.kernel.org/stable/c/3c505e2af16a9320f…
https://git.kernel.org/stable/c/9417c5818a0146980…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 , < 602a950134ee2940136f60797e4457c3983b06ce (git) Affected: 23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 , < 3896be051e928c891922d91de94c99519d215dff (git) Affected: 23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 , < 3c505e2af16a9320f4355218394a955fbbc65322 (git) Affected: 23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 , < 9417c5818a0146980c2608fda94c908e604eb033 (git)
Linux	Linux	Affected: 6.1 Unaffected: 0 , < 6.1 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "602a950134ee2940136f60797e4457c3983b06ce",
              "status": "affected",
              "version": "23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125",
              "versionType": "git"
            },
            {
              "lessThan": "3896be051e928c891922d91de94c99519d215dff",
              "status": "affected",
              "version": "23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125",
              "versionType": "git"
            },
            {
              "lessThan": "3c505e2af16a9320f4355218394a955fbbc65322",
              "status": "affected",
              "version": "23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "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-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
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                },
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                },
                {
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                }
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: validate CLC firmware records\n\nThe CLC region is supplied by firmware, but the loader trusts the\nregion count and each record length. A malformed image can make the\nregion table pointer precede the firmware buffer, make the record loop\nfail to advance, or index phy-\u003eclc past its end. Validate the table and\nrecord bounds before dereferencing or copying."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:36:28.206Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        },
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          "url": "https://git.kernel.org/stable/c/9417c5818a0146980c2608fda94c908e604eb033"
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      "title": "wifi: mt76: mt7921: validate CLC firmware records",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98159",
    "datePublished": "2026-09-25T10:36:28.206Z",
    "dateReserved": "2026-09-25T10:25:14.321Z",
    "dateUpdated": "2026-09-25T10:36:28.206Z",
    "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-HC5W-CRXQ-XMG4

CVE-2026-98159 (GCVE-0-2026-98159)

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