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GHSA-M5MP-Q9HJ-5Q22

Vulnerability from github – Published: 2026-10-28 06:30 – Updated: 2026-10-28 06:30

Details

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

wifi: p54: validate firmware record lengths

The p54 firmware parser accesses component ID and component version records without checking that their lengths cover the fields being read. A malformed record can therefore make the parser read past the record.

Validate the component ID and component version record lengths before accessing their data. The descriptor record is also checked against the shortest descriptor length found in the supported firmware images.

Reject descriptor values that underflow the RX offset or produce an empty RX range before updating the driver state.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-99100"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-28T04:18:07Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: p54: validate firmware record lengths\n\nThe p54 firmware parser accesses component ID and component version\nrecords without checking that their lengths cover the fields being read.\nA malformed record can therefore make the parser read past the record.\n\nValidate the component ID and component version record lengths before\naccessing their data. The descriptor record is also checked against the\nshortest descriptor length found in the supported firmware images.\n\nReject descriptor values that underflow the RX offset or produce an empty\nRX range before updating the driver state.",
  "id": "GHSA-m5mp-q9hj-5q22",
  "modified": "2026-10-28T06:30:25Z",
  "published": "2026-10-28T06:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99100"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c4f962f368d5e17481f3c2c5a43028953e137a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db7b86bd97b380ece8fa39cfdd7502a9fd35e56f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f641066b0ddcd1b0cf007c0d04f9c966f6e888ae"
    }
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  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-99100 (GCVE-0-2026-99100)

Vulnerability from cvelistv5 – Published: 2026-10-28 03:55 – Updated: 2026-10-28 03:55

Title

wifi: p54: validate firmware record lengths

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: p54: validate firmware record lengths The p54 firmware parser accesses component ID and component version records without checking that their lengths cover the fields being read. A malformed record can therefore make the parser read past the record. Validate the component ID and component version record lengths before accessing their data. The descriptor record is also checked against the shortest descriptor length found in the supported firmware images. Reject descriptor values that underflow the RX offset or produce an empty RX range before updating the driver state.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/f641066b0ddcd1b0c…
https://git.kernel.org/stable/c/8c4f962f368d5e174…
https://git.kernel.org/stable/c/db7b86bd97b380ece…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f641066b0ddcd1b0cf007c0d04f9c966f6e888ae (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8c4f962f368d5e17481f3c2c5a43028953e137a5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < db7b86bd97b380ece8fa39cfdd7502a9fd35e56f (git) Affected: 0 , < 6.18.59 (semver) Affected: 0 , < 7.2.13 (semver)
Linux	Linux	Unaffected: 6.18.59 , ≤ 6.18.* (semver) Unaffected: 7.2.13 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/wireless/intersil/p54/fwio.c"
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                  "versionEndExcluding": "7.3",
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      "providerMetadata": {
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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.

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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.
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