Riskcovery

CVE-2026-68092

time/jiffies: Register jiffies clocksource before usage

State
Published
Severity
Not scored
Published
Aug 10, 2026
Updated
Aug 17, 2026
Reserved
Jul 30, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

time/jiffies: Register jiffies clocksource before usage

Teddy reported that a XEN HVM has a long boot delay, which was bisected to the recent enhancements to the negative motion detection. It turned out that the jiffies clocksource is used in early boot before it is registered, which leaves the max_delta_raw field at zero. That causes the read out to be clamped to the max delta of 0, which means time is not making progress.

Cure it by ensuring that it is initialized before its first usage in timekeeping_init().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 1a678f6829a8c931fae2b62e4c88dae743c839c9 to before fe9bdea65ba231fcfb155031628bb1e8491b5fe0Affected
  • 76031d9536a076bf023bedbdb1b4317fc801dd67 to before cd25e9819620aa1325897912cfb4dd89303325feAffected
  • 76031d9536a076bf023bedbdb1b4317fc801dd67 to before 75b478096c6bbf57fe366f7f0a8cd5365043ffaaAffected
  • 76031d9536a076bf023bedbdb1b4317fc801dd67 to before f24df84cbe05e4471c04ac4b921fc0340bbc7752Affected
  • 6.12.5 to before 6.12.97Affected
LinuxLinux
  • 6.13Affected
  • before 6.13Not affected
  • 6.12.97 through 6.12.*Not affected
  • 6.18.39 through 6.18.*Not affected
  • 7.1.4 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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