Vulnerability-Lookup

CVE-2026-80912 (GCVE-0-2026-80912)

Vulnerability from cvelistv5 – Published: 2026-09-04 17:19 – Updated: 2026-09-04 17:19

Title

selinux: reject an unclaimed class value in security_get_classes()

Summary

In the Linux kernel, the following vulnerability has been resolved: selinux: reject an unclaimed class value in security_get_classes() security_get_classes() sizes an array by p_classes.nprim and fills it at value - 1, so a class value the policy never defines leaves a NULL. sel_make_classes() passes every entry to sel_make_dir(), reaching the same d_alloc_name() dereference as the permission array. The class symbol table is allowed to be sparse (policydb_class_isvalid() exists to absorb that), but this getter builds its own array straight from the hash table and has no such predicate. Fail the lookup when a value went unclaimed instead of handing out the NULL. Conforming policies define every class they declare and are unaffected.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/e0285bb152211c009…
https://git.kernel.org/stable/c/099869e9343a5f8c2…
https://git.kernel.org/stable/c/841aea4d5a25e1627…
https://git.kernel.org/stable/c/d8a10899ea3c84b80…
https://git.kernel.org/stable/c/22b05fec62c0fe986…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < e0285bb152211c00900136b66d4b420c14a59094 (git) Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 099869e9343a5f8c22b58497f074b34f63cbf856 (git) Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 841aea4d5a25e16273d04cd07a74142b4687e03b (git) Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < d8a10899ea3c84b80de72ca8ee9039e9a5156c9a (git) Affected: 55fcf09b3fe4325c9395ebbb0322a547a157ebc7 , < 22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd (git)	guessed
Linux	Linux	Affected: 2.6.23 Unaffected: 0 , < 2.6.23 (semver) Unaffected: 6.6.153 , ≤ 6.6.* (semver) Unaffected: 6.12.105 , ≤ 6.12.* (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/selinux/ss/services.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "semver"
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              "version": "6.18.46",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
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          ]
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      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject an unclaimed class value in security_get_classes()\n\nsecurity_get_classes() sizes an array by p_classes.nprim and fills it at\nvalue - 1, so a class value the policy never defines leaves a NULL.\nsel_make_classes() passes every entry to sel_make_dir(), reaching the same\nd_alloc_name() dereference as the permission array. The class symbol table\nis allowed to be sparse (policydb_class_isvalid() exists to absorb that),\nbut this getter builds its own array straight from the hash table and has\nno such predicate.\n\nFail the lookup when a value went unclaimed instead of handing out the\nNULL. Conforming policies define every class they declare and are\nunaffected."
        }
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          "url": "https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856"
        },
        {
          "url": "https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b"
        },
        {
          "url": "https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd"
        }
      ],
      "title": "selinux: reject an unclaimed class value in security_get_classes()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80912",
    "datePublished": "2026-09-04T17:19:23.066Z",
    "dateReserved": "2026-08-26T14:34:25.801Z",
    "dateUpdated": "2026-09-04T17:19:23.066Z",
    "state": "PUBLISHED"
  },
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-05T00:24:31Z",
      "cve": "CVE-2026-80912",
      "id": "CVE-2026-80912",
      "initial_release_date": "2026-09-05T00:24:31Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80912",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80912.json",
      "version": "2"
    }
  }
}

FKIE_CVE-2026-80912

Vulnerability from fkie_nvd - Published: 2026-09-04 18:18 - Updated: 2026-09-04 18:18

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/selinux/ss/services.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e0285bb152211c00900136b66d4b420c14a59094",
              "status": "affected",
              "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7",
              "versionType": "git"
            },
            {
              "lessThan": "099869e9343a5f8c22b58497f074b34f63cbf856",
              "status": "affected",
              "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7",
              "versionType": "git"
            },
            {
              "lessThan": "841aea4d5a25e16273d04cd07a74142b4687e03b",
              "status": "affected",
              "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7",
              "versionType": "git"
            },
            {
              "lessThan": "d8a10899ea3c84b80de72ca8ee9039e9a5156c9a",
              "status": "affected",
              "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7",
              "versionType": "git"
            },
            {
              "lessThan": "22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd",
              "status": "affected",
              "version": "55fcf09b3fe4325c9395ebbb0322a547a157ebc7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/selinux/ss/services.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "lessThan": "2.6.23",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.105",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject an unclaimed class value in security_get_classes()\n\nsecurity_get_classes() sizes an array by p_classes.nprim and fills it at\nvalue - 1, so a class value the policy never defines leaves a NULL.\nsel_make_classes() passes every entry to sel_make_dir(), reaching the same\nd_alloc_name() dereference as the permission array. The class symbol table\nis allowed to be sparse (policydb_class_isvalid() exists to absorb that),\nbut this getter builds its own array straight from the hash table and has\nno such predicate.\n\nFail the lookup when a value went unclaimed instead of handing out the\nNULL. Conforming policies define every class they declare and are\nunaffected."
    }
  ],
  "id": "CVE-2026-80912",
  "lastModified": "2026-09-04T18:18:01.047",
  "metrics": {},
  "published": "2026-09-04T18:18:01.047",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-5V22-VQG5-VRR8

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31

Details

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

selinux: reject an unclaimed class value in security_get_classes()

security_get_classes() sizes an array by p_classes.nprim and fills it at value - 1, so a class value the policy never defines leaves a NULL. sel_make_classes() passes every entry to sel_make_dir(), reaching the same d_alloc_name() dereference as the permission array. The class symbol table is allowed to be sparse (policydb_class_isvalid() exists to absorb that), but this getter builds its own array straight from the hash table and has no such predicate.

Fail the lookup when a value went unclaimed instead of handing out the NULL. Conforming policies define every class they declare and are unaffected.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-80912"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T18:18:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject an unclaimed class value in security_get_classes()\n\nsecurity_get_classes() sizes an array by p_classes.nprim and fills it at\nvalue - 1, so a class value the policy never defines leaves a NULL.\nsel_make_classes() passes every entry to sel_make_dir(), reaching the same\nd_alloc_name() dereference as the permission array. The class symbol table\nis allowed to be sparse (policydb_class_isvalid() exists to absorb that),\nbut this getter builds its own array straight from the hash table and has\nno such predicate.\n\nFail the lookup when a value went unclaimed instead of handing out the\nNULL. Conforming policies define every class they declare and are\nunaffected.",
  "id": "GHSA-5v22-vqg5-vrr8",
  "modified": "2026-09-04T18:31:34Z",
  "published": "2026-09-04T18:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80912"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/099869e9343a5f8c22b58497f074b34f63cbf856"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22b05fec62c0fe9864cfceb52f7d0f3a34d9b1dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/841aea4d5a25e16273d04cd07a74142b4687e03b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8a10899ea3c84b80de72ca8ee9039e9a5156c9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0285bb152211c00900136b66d4b420c14a59094"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-80912 (GCVE-0-2026-80912)

FKIE_CVE-2026-80912

GHSA-5V22-VQG5-VRR8

Tags

Sightings

Nomenclature