#VU118212 Input validation error in Linux kernel - CVE-2025-40109
Published: November 10, 2025
Vulnerability identifier: #VU118212
Vulnerability risk: Low
CVSSv4.0: 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-2025-40109
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
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 crypto_del_default_rng() and crypto_register_rng() functions in crypto/rng.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/15d6f42da1bb527629d8e1067b1302d58dec9166
- https://git.kernel.org/stable/c/17acbcd44fe8dc17dc1072375e76df2d52da6ac8
- https://git.kernel.org/stable/c/915cb75983bc5e8b80f8a2f25a4af463f7b18c14
- https://git.kernel.org/stable/c/ab172f4f42626549b02bada05f09e3f2b0cc26ec
- https://git.kernel.org/stable/c/bd903c25b652c331831226cdf56c8179d18e43f4
- https://git.kernel.org/stable/c/c0d36727bf39bb16ef0a67ed608e279535ebf0da
- https://git.kernel.org/stable/c/c5c703b50e91dd4748769f4c5ab50d9ad60be370
- https://git.kernel.org/stable/c/e247a7d138e514a40edda7c4d72c8bd49bb2cad3