#VU124860 Improper control of a resource through its lifetime in Linux kernel - CVE-2026-23416
Published: April 3, 2026
Vulnerability identifier: #VU124860
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-2026-23416
CWE-ID: CWE-664
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 cause a denial of service.
The vulnerability exists due to improper state update in mm/mseal VMA iteration logic when modifying and merging virtual memory areas. A local user can trigger VMA merges during memory sealing operations to cause a denial of service.
The issue occurs because the stored end of the current VMA can become stale after vma_modify_flags() merges a VMA, leading to an incorrect start value on the next iteration.
Remediation
Install security update from vendor's repository.