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GHSA-4VQV-FF48-XVV6

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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

apparmor: fail policy unpack on accept2 allocation failure

unpack_pdb() may need to allocate a missing ACCEPT2 table for older policy data. If that allocation failed, it set an error message but jumped to the success path, returning a policydb with the required table missing.

Return -ENOMEM through the normal failure path when the ACCEPT2 allocation fails. Remove the now-unused out label.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72457"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:19Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fail policy unpack on accept2 allocation failure\n\nunpack_pdb() may need to allocate a missing ACCEPT2 table for older policy\ndata. If that allocation failed, it set an error message but jumped to the\nsuccess path, returning a policydb with the required table missing.\n\nReturn -ENOMEM through the normal failure path when the ACCEPT2 allocation\nfails. Remove the now-unused out label.",
  "id": "GHSA-4vqv-ff48-xvv6",
  "modified": "2026-08-15T06:32:25Z",
  "published": "2026-08-15T06:32:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72457"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/106e909e12baf059538f0b0f1a59f87781d25b3c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22dc9433d458cff1270f120685114a9753e0ad1b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45cf568241048e560a81aa2053f06a62069f5640"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72457 (GCVE-0-2026-72457)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:57 – Updated: 2026-08-17 05:15

Title

apparmor: fail policy unpack on accept2 allocation failure

Summary

In the Linux kernel, the following vulnerability has been resolved: apparmor: fail policy unpack on accept2 allocation failure unpack_pdb() may need to allocate a missing ACCEPT2 table for older policy data. If that allocation failed, it set an error message but jumped to the success path, returning a policydb with the required table missing. Return -ENOMEM through the normal failure path when the ACCEPT2 allocation fails. Remove the now-unused out label.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/22dc9433d458cff12…
https://git.kernel.org/stable/c/106e909e12baf0595…
https://git.kernel.org/stable/c/45cf568241048e560…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2e12c5f060176ede209673e4f63ea5d0e3c5814c , < 22dc9433d458cff1270f120685114a9753e0ad1b (git) Affected: 2e12c5f060176ede209673e4f63ea5d0e3c5814c , < 106e909e12baf059538f0b0f1a59f87781d25b3c (git) Affected: 2e12c5f060176ede209673e4f63ea5d0e3c5814c , < 45cf568241048e560a81aa2053f06a62069f5640 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/policy_unpack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "22dc9433d458cff1270f120685114a9753e0ad1b",
              "status": "affected",
              "version": "2e12c5f060176ede209673e4f63ea5d0e3c5814c",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "2e12c5f060176ede209673e4f63ea5d0e3c5814c",
              "versionType": "git"
            },
            {
              "lessThan": "45cf568241048e560a81aa2053f06a62069f5640",
              "status": "affected",
              "version": "2e12c5f060176ede209673e4f63ea5d0e3c5814c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/policy_unpack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fail policy unpack on accept2 allocation failure\n\nunpack_pdb() may need to allocate a missing ACCEPT2 table for older policy\ndata. If that allocation failed, it set an error message but jumped to the\nsuccess path, returning a policydb with the required table missing.\n\nReturn -ENOMEM through the normal failure path when the ACCEPT2 allocation\nfails. Remove the now-unused out label."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:15:01.418Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/45cf568241048e560a81aa2053f06a62069f5640"
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      ],
      "title": "apparmor: fail policy unpack on accept2 allocation failure",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72457",
    "datePublished": "2026-08-15T05:57:03.536Z",
    "dateReserved": "2026-08-09T03:40:39.932Z",
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    "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.

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

GHSA-4VQV-FF48-XVV6

CVE-2026-72457 (GCVE-0-2026-72457)

Tags

Sightings

Nomenclature