CVE-2023-53680
NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
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[].
INFO
Published Date :
Oct. 7, 2025, 4:15 p.m.
Last Modified :
Feb. 3, 2026, 6:26 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Apply the provided patch to the Linux kernel.
- Recompile and install the updated kernel.
- Reboot the system to load the new kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-53680.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53680 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-53680
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-53680 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53680 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Feb. 03, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.2.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.107 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.24 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14 up to (excluding) 5.10.220 Added Reference Type kernel.org: https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cc Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 07, 2025
Action Type Old Value New Value Added 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[]. Added Reference https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5 Added Reference https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3 Added Reference https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1 Added Reference https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cc Added Reference https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e