Vulnerability-Lookup

GHSA-PPW2-5GQJ-39J4

Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31

Details

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

KEYS: trusted: Fix tpm2_load_cmd() boundary check

tpm2_load_cmd() does boundary checks against the ASN.1 size i.e., payload->blob_len. Address this by passing the decoded blob size to tpm2_load_cmd(), and use it for the boundary checks.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98221"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-06T09:18:09Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: Fix tpm2_load_cmd() boundary check\n\ntpm2_load_cmd() does boundary checks against the ASN.1 size i.e.,\npayload-\u003eblob_len. Address this by passing the decoded blob size to\ntpm2_load_cmd(), and use it for the boundary checks.",
  "id": "GHSA-ppw2-5gqj-39j4",
  "modified": "2026-10-06T09:31:31Z",
  "published": "2026-10-06T09:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98221"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/114f00d738f15dd8c7318369edcdc53dd6d08763"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/134825dfc971fbf2b1d0f58f0b3bce8332ad0afb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fd487c69ad3161e358c33c170bab0cf02a071b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5afa57ea91481c6c49f194b0f5a5c4d96a4d7348"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ddbc5f4bb498aff8096a5231574858a4bffee4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b020b447338872440142fe8a57350a483da86b7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc86227fea28aed86c1fb52a884560b4440da198"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98221 (GCVE-0-2026-98221)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:44 – Updated: 2026-10-06 08:44

Title

KEYS: trusted: Fix tpm2_load_cmd() boundary check

Summary

In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix tpm2_load_cmd() boundary check tpm2_load_cmd() does boundary checks against the ASN.1 size i.e., payload->blob_len. Address this by passing the decoded blob size to tpm2_load_cmd(), and use it for the boundary checks.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

7 references

URL	Tags
https://git.kernel.org/stable/c/cc86227fea28aed86…
https://git.kernel.org/stable/c/b020b447338872440…
https://git.kernel.org/stable/c/3fd487c69ad3161e3…
https://git.kernel.org/stable/c/5afa57ea91481c6c4…
https://git.kernel.org/stable/c/9ddbc5f4bb498aff8…
https://git.kernel.org/stable/c/134825dfc971fbf2b…
https://git.kernel.org/stable/c/114f00d738f15dd8c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f2219745250f388edacabe6cca73654131c67d0a , < cc86227fea28aed86c1fb52a884560b4440da198 (git) Affected: f2219745250f388edacabe6cca73654131c67d0a , < b020b447338872440142fe8a57350a483da86b7a (git) Affected: f2219745250f388edacabe6cca73654131c67d0a , < 3fd487c69ad3161e358c33c170bab0cf02a071b7 (git) Affected: f2219745250f388edacabe6cca73654131c67d0a , < 5afa57ea91481c6c49f194b0f5a5c4d96a4d7348 (git) Affected: f2219745250f388edacabe6cca73654131c67d0a , < 9ddbc5f4bb498aff8096a5231574858a4bffee4f (git) Affected: f2219745250f388edacabe6cca73654131c67d0a , < 134825dfc971fbf2b1d0f58f0b3bce8332ad0afb (git) Affected: f2219745250f388edacabe6cca73654131c67d0a , < 114f00d738f15dd8c7318369edcdc53dd6d08763 (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.54 , ≤ 6.18.* (semver) Unaffected: 7.2.8 , ≤ 7.2.* (semver) Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/keys/trusted-keys/trusted_tpm2.c"
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              "versionType": "git"
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              "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": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                },
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                  "vulnerable": true
                },
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                },
                {
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: Fix tpm2_load_cmd() boundary check\n\ntpm2_load_cmd() does boundary checks against the ASN.1 size i.e.,\npayload-\u003eblob_len. Address this by passing the decoded blob size to\ntpm2_load_cmd(), and use it for the boundary checks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:44:56.728Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/b020b447338872440142fe8a57350a483da86b7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/3fd487c69ad3161e358c33c170bab0cf02a071b7"
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        {
          "url": "https://git.kernel.org/stable/c/114f00d738f15dd8c7318369edcdc53dd6d08763"
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      "title": "KEYS: trusted: Fix tpm2_load_cmd() boundary check",
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    "datePublished": "2026-10-06T08:44:56.728Z",
    "dateReserved": "2026-09-25T10:25:14.327Z",
    "dateUpdated": "2026-10-06T08:44:56.728Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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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-PPW2-5GQJ-39J4

CVE-2026-98221 (GCVE-0-2026-98221)

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