Vulnerability details
CVE-2023-53680
Linux Linux
NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
CVSS 3.1
7.5High
Official 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[].
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 4.14 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 ≤ v < 50827896c365e0f6c8b55ed56d444dafd87c92c5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 ≤ v < a64160124d5a078be0c380b1e8a0bad2d040d3a1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 ≤ v < ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 ≤ v < f352c41fa718482979e7e6b71b4da2b718e381cc | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 ≤ v < 804d8e0a6e54427268790472781e03bc243f4ee3 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5
- https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1
- https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e
- https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cc
- https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3
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Details
- Published
- 2025-10-07
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.3%
Probability of exploitation in 30 days
23.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- —