FKIE_CVE-2026-68092

Vulnerability from fkie_nvd - Published: 2026-08-10 12:17 - Updated: 2026-08-17 05:18
Severity
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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75b478096c6bbf57fe366f7f0a8cd5365043ffaa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd25e9819620aa1325897912cfb4dd89303325fe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f24df84cbe05e4471c04ac4b921fc0340bbc7752
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe9bdea65ba231fcfb155031628bb1e8491b5fe0
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/time/jiffies.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fe9bdea65ba231fcfb155031628bb1e8491b5fe0",
              "status": "affected",
              "version": "1a678f6829a8c931fae2b62e4c88dae743c839c9",
              "versionType": "git"
            },
            {
              "lessThan": "cd25e9819620aa1325897912cfb4dd89303325fe",
              "status": "affected",
              "version": "76031d9536a076bf023bedbdb1b4317fc801dd67",
              "versionType": "git"
            },
            {
              "lessThan": "75b478096c6bbf57fe366f7f0a8cd5365043ffaa",
              "status": "affected",
              "version": "76031d9536a076bf023bedbdb1b4317fc801dd67",
              "versionType": "git"
            },
            {
              "lessThan": "f24df84cbe05e4471c04ac4b921fc0340bbc7752",
              "status": "affected",
              "version": "76031d9536a076bf023bedbdb1b4317fc801dd67",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.97",
              "status": "affected",
              "version": "6.12.5",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/time/jiffies.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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()."
    }
  ],
  "id": "CVE-2026-68092",
  "lastModified": "2026-08-17T05:18:08.450",
  "metrics": {},
  "published": "2026-08-10T12:17:22.030",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/75b478096c6bbf57fe366f7f0a8cd5365043ffaa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cd25e9819620aa1325897912cfb4dd89303325fe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f24df84cbe05e4471c04ac4b921fc0340bbc7752"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fe9bdea65ba231fcfb155031628bb1e8491b5fe0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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