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

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-05-11 19:49
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
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < 50827896c365e0f6c8b55ed56d444dafd87c92c5 (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < a64160124d5a078be0c380b1e8a0bad2d040d3a1 (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < f352c41fa718482979e7e6b71b4da2b718e381cc (git)
Affected: f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 , < 804d8e0a6e54427268790472781e03bc243f4ee3 (git)
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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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  }
}


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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.


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