#VU113335 Input validation error in Linux kernel - CVE-2025-38430

Vulnerability identifier: #VU113335

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-38430

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the nfsd4_spo_must_allow() function in fs/nfsd/nfs4proc.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

---

External links
https://git.kernel.org/stable/c/1244f0b2c3cecd3f349a877006e67c9492b41807
https://git.kernel.org/stable/c/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af
https://git.kernel.org/stable/c/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f
https://git.kernel.org/stable/c/64a723b0281ecaa59d31aad73ef8e408a84cb603
https://git.kernel.org/stable/c/7a75a956692aa64211a9e95781af1ec461642de4
https://git.kernel.org/stable/c/b1d0323a09a29f81572c7391e0d80d78724729c9
https://git.kernel.org/stable/c/bf78a2706ce975981eb5167f2d3b609eb5d24c19
https://git.kernel.org/stable/c/e7e943ddd1c6731812357a28e7954ade3a7d8517

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?