Linux Kernel up to 6.15.3 nfsd nfsd4_spo_must_allow state issue

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.15.3. This affects the function nfsd4_spo_must_allow of the component nfsd. The manipulation leads to state issue. This vulnerability is traded as CVE-2025-38430. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.15.3 and classified as problematic. This issue affects the function nfsd4_spo_must_allow of the component nfsd. The manipulation with an unknown input leads to a state issue vulnerability. Using CWE to declare the problem leads to CWE-371. The impact remains unknown. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2025-38430 since 04/16/2025. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/03/2026).

The vulnerability scanner Nessus provides a plugin with the ID 264318 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20553)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.295, 5.10.239, 5.15.186, 6.1.142, 6.6.95, 6.12.35, 6.15.4 or 6.16-rc1 eliminates this vulnerability. Applying the patch bf78a2706ce975981eb5167f2d3b609eb5d24c19/b1d0323a09a29f81572c7391e0d80d78724729c9/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f/64a723b0281ecaa59d31aad73ef8e408a84cb603/e7e943ddd1c6731812357a28e7954ade3a7d8517/7a75a956692aa64211a9e95781af1ec461642de4/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af/1244f0b2c3cecd3f349a877006e67c9492b41807 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (264318), EUVD (EUVD-2025-22655) and CERT Bund (WID-SEC-2025-1653). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: State issue
CWE: CWE-371
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 264318
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20553)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.295/5.10.239/5.15.186/6.1.142/6.6.95/6.12.35/6.15.4/6.16-rc1
Patch: bf78a2706ce975981eb5167f2d3b609eb5d24c19/b1d0323a09a29f81572c7391e0d80d78724729c9/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f/64a723b0281ecaa59d31aad73ef8e408a84cb603/e7e943ddd1c6731812357a28e7954ade3a7d8517/7a75a956692aa64211a9e95781af1ec461642de4/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af/1244f0b2c3cecd3f349a877006e67c9492b41807

Timelineinfo

04/16/2025 CVE reserved
07/25/2025 +100 days Advisory disclosed
07/25/2025 +0 days VulDB entry created
01/03/2026 +162 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38430 (🔒)
GCVE (CVE): GCVE-0-2025-38430
GCVE (VulDB): GCVE-100-317759
EUVD: 🔒
CERT Bund: WID-SEC-2025-1653 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/25/2025 19:35
Updated: 01/03/2026 23:02
Changes: 07/25/2025 19:35 (58), 08/20/2025 21:21 (7), 09/13/2025 02:35 (2), 09/15/2025 00:12 (1), 09/16/2025 06:18 (1), 09/29/2025 00:09 (1), 11/02/2025 12:40 (1), 11/17/2025 06:19 (1), 12/23/2025 00:48 (11), 12/23/2025 08:59 (1), 01/03/2026 23:02 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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