Vulnerability-Lookup

GHSA-FC4W-FG4F-8X55

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

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

wifi: rtw89: fix HE extended capability length check

rtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability byte 10, but rejects only datalen values below 10. Byte 10 requires at least 11 bytes.

Require datalen >= 11 before reading data[10].

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93281"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T16:17:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix HE extended capability length check\n\nrtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability\nbyte 10, but rejects only datalen values below 10.  Byte 10 requires at\nleast 11 bytes.\n\nRequire datalen \u003e= 11 before reading data[10].",
  "id": "GHSA-fc4w-fg4f-8x55",
  "modified": "2026-09-24T18:31:26Z",
  "published": "2026-09-24T18:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93281"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2aba608a86e9b099c9af2ea70b620552dee2b628"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/655c4401c18d735dbaf2cc172ff4f626b3a896a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bddbd1de765bf6ddc0473ad683910eb3a2a92a43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eddf53f1edb0cf7f302bd15cdb47cca90948c205"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f132fc01b359a0f7d81fe13d769ea4e7c4baa66e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2a01deff7d0d5cc3dcbf2358dac113979303c8e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93281 (GCVE-0-2026-93281)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:52 – Updated: 2026-09-24 15:52

Title

wifi: rtw89: fix HE extended capability length check

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix HE extended capability length check rtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability byte 10, but rejects only datalen values below 10. Byte 10 requires at least 11 bytes. Require datalen >= 11 before reading data[10].

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

6 references

URL	Tags
https://git.kernel.org/stable/c/eddf53f1edb0cf7f3…
https://git.kernel.org/stable/c/655c4401c18d735db…
https://git.kernel.org/stable/c/bddbd1de765bf6ddc…
https://git.kernel.org/stable/c/f2a01deff7d0d5cc3…
https://git.kernel.org/stable/c/f132fc01b359a0f7d…
https://git.kernel.org/stable/c/2aba608a86e9b099c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8d540f9d29162e273797bef36686a010724f0f8a , < eddf53f1edb0cf7f302bd15cdb47cca90948c205 (git) Affected: 8d540f9d29162e273797bef36686a010724f0f8a , < 655c4401c18d735dbaf2cc172ff4f626b3a896a0 (git) Affected: 8d540f9d29162e273797bef36686a010724f0f8a , < bddbd1de765bf6ddc0473ad683910eb3a2a92a43 (git) Affected: 8d540f9d29162e273797bef36686a010724f0f8a , < f2a01deff7d0d5cc3dcbf2358dac113979303c8e (git) Affected: 8d540f9d29162e273797bef36686a010724f0f8a , < f132fc01b359a0f7d81fe13d769ea4e7c4baa66e (git) Affected: 8d540f9d29162e273797bef36686a010724f0f8a , < 2aba608a86e9b099c9af2ea70b620552dee2b628 (git)
Linux	Linux	Affected: 6.1 Unaffected: 0 , < 6.1 (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/mac.c"
          ],
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              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: fix HE extended capability length check\n\nrtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability\nbyte 10, but rejects only datalen values below 10.  Byte 10 requires at\nleast 11 bytes.\n\nRequire datalen \u003e= 11 before reading data[10]."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-09-24T15:52:23.240Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/2aba608a86e9b099c9af2ea70b620552dee2b628"
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    "datePublished": "2026-09-24T15:52:23.240Z",
    "dateReserved": "2026-09-17T16:02:15.098Z",
    "dateUpdated": "2026-09-24T15:52:23.240Z",
    "state": "PUBLISHED"
  },
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}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-FC4W-FG4F-8X55

CVE-2026-93281 (GCVE-0-2026-93281)

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