#VU116473 Infinite loop in Linux kernel - CVE-2025-39931
Published: October 4, 2025
Vulnerability identifier: #VU116473
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-2025-39931
CWE-ID: CWE-835
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 infinite loop within the af_alg_sendmsg() function in crypto/af_alg.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/045ee26aa3920a47ec46d7fcb302420bf01fd753
- https://git.kernel.org/stable/c/2374c11189ef704a3e4863646369f1b8e6a27d71
- https://git.kernel.org/stable/c/24c1106504c625fabd3b7229611af617b4c27ac7
- https://git.kernel.org/stable/c/6241b9e2809b12da9130894cf5beddf088dc1b8a
- https://git.kernel.org/stable/c/9574b2330dbd2b5459b74d3b5e9619d39299fc6f