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CVE-2023-53680 (GCVE-0-2023-53680)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-08-05 09:15
VLAI
Title
NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL OPDESC() simply indexes into nfsd4_ops[] by the op's operation number, without range checking that value. It assumes callers are careful to avoid calling it with an out-of-bounds opnum value. nfsd4_decode_compound() is not so careful, and can invoke OPDESC() with opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end of nfsd4_ops[].
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < 50827896c365e0f6c8b55ed56d444dafd87c92c5 (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < a64160124d5a078be0c380b1e8a0bad2d040d3a1 (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < f352c41fa718482979e7e6b71b4da2b718e381cc (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < 804d8e0a6e54427268790472781e03bc243f4ee3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 5.10.220 , ≤ 5.10.* (semver)
Unaffected: 5.15.107 , ≤ 5.15.* (semver)
Unaffected: 6.1.24 , ≤ 6.1.* (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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      "cve": "CVE-2023-53680",
      "id": "CVE-2023-53680",
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      "product_status:fixed": "630",
      "product_status:known_affected": "170",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53680.json",
      "version": "3"
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      "current_release_date": "2026-08-31T00:56:25Z",
      "cve": "CVE-2023-53680",
      "id": "CVE-2023-53680",
      "initial_release_date": "2025-10-08T23:30:01Z",
      "product_status:known_affected": "423",
      "product_status:known_not_affected": "326",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53680",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53680.json",
      "version": "22"
    }
  }
}



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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

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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.


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.