CVE-2026-68092 (GCVE-0-2026-68092)

Vulnerability from cvelistv5 – Published: 2026-08-10 11:51 – Updated: 2026-08-17 04:58
VLAI
Title
time/jiffies: Register jiffies clocksource before usage
Summary
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().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1a678f6829a8c931fae2b62e4c88dae743c839c9 , < fe9bdea65ba231fcfb155031628bb1e8491b5fe0 (git)
Affected: 76031d9536a076bf023bedbdb1b4317fc801dd67 , < cd25e9819620aa1325897912cfb4dd89303325fe (git)
Affected: 76031d9536a076bf023bedbdb1b4317fc801dd67 , < 75b478096c6bbf57fe366f7f0a8cd5365043ffaa (git)
Affected: 76031d9536a076bf023bedbdb1b4317fc801dd67 , < f24df84cbe05e4471c04ac4b921fc0340bbc7752 (git)
Affected: 6.12.5 , < 6.12.97 (semver)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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              "operator": "OR"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntime/jiffies: Register jiffies clocksource before usage\n\nTeddy reported that a XEN HVM has a long boot delay, which was bisected to\nthe recent enhancements to the negative motion detection. It turned out\nthat the jiffies clocksource is used in early boot before it is registered,\nwhich leaves the max_delta_raw field at zero. That causes the read out to\nbe clamped to the max delta of 0, which means time is not making progress.\n\nCure it by ensuring that it is initialized before its first usage in\ntimekeeping_init()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T04:58:40.365Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "time/jiffies: Register jiffies clocksource before usage",
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  "cveMetadata": {
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    "cveId": "CVE-2026-68092",
    "datePublished": "2026-08-10T11:51:47.895Z",
    "dateReserved": "2026-07-30T09:28:09.367Z",
    "dateUpdated": "2026-08-17T04:58:40.365Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
      "aggregate_severity": "Low",
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      "cve": "CVE-2026-68092",
      "id": "CVE-2026-68092",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: time/jiffies: Register jiffies clocksource before usage",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68092.json",
      "version": "3"
    },
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      "cve": "CVE-2026-68092",
      "id": "CVE-2026-68092",
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      "product_status:known_affected": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68092",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68092.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.