CVE-2023-53680NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
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No exploitation reported and no EPSS estimate yet.
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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
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 before 50827896c365e0f6c8b55ed56d444dafd87c92c5; from f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 before a64160124d5a078be0c380b1e8a0bad2d040d3a1; from f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 before ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e; from f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 before f352c41fa718482979e7e6b71b4da2b718e381cc; from f4f9ef4a1b0a1ca80b152e28e176d69515bdf7e8 before 804d8e0a6e54427268790472781e03bc243f4ee3 | CNA record |
linux linux_kernel linux:linux_kernel | from 4.14 before 5.10.220; from 5.11 before 5.15.107; from 5.16 before 6.1.24; from 6.2 before 6.2.11; 6.3; 6.3; 6.3; 6.3; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5patch
- https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1patch
- https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0epatch
- https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381ccpatch
- https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.