CVE-2025-40057 (GCVE-0-2025-40057)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2026-05-11 21:41
VLAI
Title
ptp: Add a upper bound on max_vclocks
Summary
In the Linux kernel, the following vulnerability has been resolved: ptp: Add a upper bound on max_vclocks syzbot reported WARNING in max_vclocks_store. This occurs when the argument max is too large for kcalloc to handle. Extend the guard to guard against values that are too large for kcalloc
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 73f37068d540eba5f93ba3a0019bf479d35ebd76 , < 8dd446056336faa2283d62cefc2f576536845edc (git)
Affected: 73f37068d540eba5f93ba3a0019bf479d35ebd76 , < 35ce5f163889dbce88eda1df661b357a09bbed87 (git)
Affected: 73f37068d540eba5f93ba3a0019bf479d35ebd76 , < e9f35294e18da82162004a2f35976e7031aaf7f9 (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 6.12.53 , ≤ 6.12.* (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/ptp/ptp_private.h",
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              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nptp: Add a upper bound on max_vclocks\n\nsyzbot reported WARNING in max_vclocks_store.\n\nThis occurs when the argument max is too large for kcalloc to handle.\n\nExtend the guard to guard against values that are too large for\nkcalloc"
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:41:38.864Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40057",
    "datePublished": "2025-10-28T11:48:30.947Z",
    "dateReserved": "2025-04-16T07:20:57.158Z",
    "dateUpdated": "2026-05-11T21:41:38.864Z",
    "state": "PUBLISHED"
  },
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      "id": "msrc_CVE-2025-40057",
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    "nvd": {
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        "cveTags": [],
        "descriptions": [
          {
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          }
        ],
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        "lastModified": "2026-06-17T09:21:11.670",
        "metrics": {},
        "published": "2025-10-28T12:15:40.033",
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      "title": "SUSE CVE CVE-2025-40057",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-40057.json",
      "version": "16"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.