SB2025111037 - Input validation error in Linux kernel crypto
Published: November 10, 2025
Security Bulletin ID
SB2025111037
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2025-40109)
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 website.
References
- 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