CVE-2025-38430 | nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request

In the Linux kernel, the following vulnerability has been resolved: nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request If the request being processed is not a v4 compound request, then examining the cstate can have undefined results. This patch adds a check that the rpc procedure being executed (rq_procinfo) is the NFSPROC4_COMPOUND procedure.

Published: 2025-07-25 Last update: 2026-05-12 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-38430 is rated Low Risk (30.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.09%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-38430

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-21 0.02% 0.09% +0.07%
2 2025-12-23 0.07% 0.02% -0.05%
3 2025-11-21 — 0.07% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-38430

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2025-38430

GitHub Security Advisory for CVE-2025-38430

GHSA-ffxp-vqfg-26jp · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: nfsd: nfsd4_spo_must_allow()...

OS Trackers for CVE-2025-38430

vendor priority summary link
debian not yet assigned CVE-2025-38430 not yet assigned priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. https://security-tracker.debian.org/tracker/CVE-2025-38430
redhat medium — https://access.redhat.com/security/cve/CVE-2025-38430
suse medium CVE-2025-38430 severity moderate: SUSE including 485 source package names (2.1.3-6.67:kernel-default-base-6.4.0-32.1.21.10, 2.1.3-7.44:kernel-default-6.4.0-32.1, …), 989 product×package rows across 199 product lines (Container suse/sl-micro/6.0/base-os-container, Container suse/sl-micro/6.0/kvm-os-container, … (199 product lines)): Fixed 697, Known Affected 231, Known Not Affected 40, First Fixed 21. https://www.suse.com/security/cve/CVE-2025-38430/
ubuntu medium CVE-2025-38430 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1414 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1017, released 170, ignored 159, needed 45, not-affected 20, needs-triage 2, pending 1. https://ubuntu.com/security/CVE-2025-38430

Affected software / configurations for CVE-2025-38430

Vendor Product Version Raw CPE
linux linux_kernel < 5.4.295 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.5, < 5.10.239 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.11, < 5.15.186 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.16, < 6.1.142 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.2, < 6.6.95 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.7, < 6.12.35 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.13, < 6.15.4 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2025-38430

URL Tags
https://git.kernel.org/stable/c/1244f0b2c3cecd3f349a877006e67c9492b41807 Patch
https://git.kernel.org/stable/c/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af Patch
https://git.kernel.org/stable/c/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f Patch
https://git.kernel.org/stable/c/64a723b0281ecaa59d31aad73ef8e408a84cb603 Patch
https://git.kernel.org/stable/c/7a75a956692aa64211a9e95781af1ec461642de4 Patch
https://git.kernel.org/stable/c/b1d0323a09a29f81572c7391e0d80d78724729c9 Patch
https://git.kernel.org/stable/c/bf78a2706ce975981eb5167f2d3b609eb5d24c19 Patch
https://git.kernel.org/stable/c/e7e943ddd1c6731812357a28e7954ade3a7d8517 Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
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