CVE-2023-53680
NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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[].
Timeline
ID reserved
By Linux
Published
- 12 months later
· 12 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 – < 50827896c365e0f6c8b55ed56d444dafd87c92c5
- affected f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 – < a64160124d5a078be0c380b1e8a0bad2d040d3a1
- affected f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 – < ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e
- affected f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 – < f352c41fa718482979e7e6b71b4da2b718e381cc
- affected f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 – < 804d8e0a6e54427268790472781e03bc243f4ee3
- affected 4.14
- unaffected < 4.14
- unaffected 5.10.220 – ≤ 5.10.*
- unaffected 5.15.107 – ≤ 5.15.*
- unaffected 6.1.24 – ≤ 6.1.*
- unaffected 6.2.11 – ≤ 6.2.*
- unaffected 6.3 – ≤ *
References (5)
- https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5 (opens in a new tab)
- https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1 (opens in a new tab)
- https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e (opens in a new tab)
- https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cc (opens in a new tab)
- https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-53680)Record last updated .