Timekeeping Vulnerability in Linux Kernel Affecting Auxiliary Timekeeper
CVE-2026-23106

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 4 February 2026

What is CVE-2026-23106?

A vulnerability has been identified in the Linux kernel's timekeeping mechanism. The issue arises when the adjtimex functionality is applied to auxiliary timekeepers without correctly updating the reference to the core timekeeper. This error can lead to improper updates to the core timekeeper's sequence lock, potentially causing inconsistencies in timekeeping. The problem is exacerbated by the lack of appropriate locking mechanisms, as evidenced by warnings in the lock debugging diagnostics. It is essential for users operating affected versions of the Linux kernel to apply updates to rectify this vulnerability.

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