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Vulnerabilities CVE-2023-53680

CVE-2023-53680

High
Open
TLP:CLEAR

NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL

AI Analysis

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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[].

Details

CVSS Score
7.5
EPSS Score
0.28%

20.2th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence
90%
Published
Oct 7, 2025
Last Modified
Aug 5, 2026
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