CVE-2026-74329 (GCVE-0-2026-74329)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:17
VLAI
Title
watchdog: unregister PM notifier on watchdog unregister
Summary
In the Linux kernel, the following vulnerability has been resolved: watchdog: unregister PM notifier on watchdog unregister watchdog_register_device() registers wdd->pm_nb when WDOG_NO_PING_ON_SUSPEND is set, but watchdog_unregister_device() does not remove it. This leaves an embedded notifier block on the PM notifier chain after the watchdog device has been unregistered. A later suspend/resume notification can then call watchdog_pm_notifier() with a stale watchdog_device pointer, or at minimum after wdd->wd_data has been cleared by watchdog_dev_unregister(). Unregister the PM notifier before tearing down the watchdog device.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < cd2d1b1f99308f7680d75a377daaff363f1cc736 (git)
Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < 5d9b58ec6f5de5e159a570d419b1b08b3b9f854b (git)
Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < 89184909634e50d086d86d8a0c03fc86fe8d889f (git)
Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < e690afea5c876a4abfa2978c6a664460ed7d1217 (git)
Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < 298821692d447c2f7b1bc9ef41cd88a31bf56436 (git)
Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < c70b5bb6f04f77ef90e047d7edc2f476e206909f (git)
Affected: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 , < a298c7302ee9584a7a1ac1e8acbede8d98ab51a4 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: unregister PM notifier on watchdog unregister\n\nwatchdog_register_device() registers wdd-\u003epm_nb when\nWDOG_NO_PING_ON_SUSPEND is set, but watchdog_unregister_device() does not\nremove it. This leaves an embedded notifier block on the PM notifier chain\nafter the watchdog device has been unregistered.\n\nA later suspend/resume notification can then call watchdog_pm_notifier()\nwith a stale watchdog_device pointer, or at minimum after wdd-\u003ewd_data has\nbeen cleared by watchdog_dev_unregister().\n\nUnregister the PM notifier before tearing down the watchdog device."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:17:20.223Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2026-08-15T05:44:03.885Z",
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: unregister PM notifier on watchdog unregister\n\nwatchdog_register_device() registers wdd-\u003epm_nb when\nWDOG_NO_PING_ON_SUSPEND is set, but watchdog_unregister_device() does not\nremove it. This leaves an embedded notifier block on the PM notifier chain\nafter the watchdog device has been unregistered.\n\nA later suspend/resume notification can then call watchdog_pm_notifier()\nwith a stale watchdog_device pointer, or at minimum after wdd-\u003ewd_data has\nbeen cleared by watchdog_dev_unregister().\n\nUnregister the PM notifier before tearing down the watchdog device."
          }
        ],
        "id": "CVE-2026-74329",
        "lastModified": "2026-08-17T06:19:27.317",
        "metrics": {},
        "published": "2026-08-15T06:22:33.640",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-20T18:15:41+00:00",
      "cve": "CVE-2026-74329",
      "id": "CVE-2026-74329",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: watchdog: unregister PM notifier on watchdog unregister",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74329.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-27T16:52:02Z",
      "cve": "CVE-2026-74329",
      "id": "CVE-2026-74329",
      "initial_release_date": "2026-08-27T16:52:02Z",
      "product_status:known_affected": "30",
      "product_status:known_not_affected": "260",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-74329",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-74329.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

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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.
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  • 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.


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