CVE-2026-74329 (GCVE-0-2026-74329)
Vulnerability from cvelistv5
Published
2026-08-15 05:58
Modified
2026-08-17 05:17
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
Version: 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3
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{
  "containers": {
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          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/watchdog/watchdog_core.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "5.15.212",
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              "status": "unaffected",
              "version": "7.1.5",
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              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
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          ]
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "vulnerable": true
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                {
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      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:17:20.223Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cd2d1b1f99308f7680d75a377daaff363f1cc736"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d9b58ec6f5de5e159a570d419b1b08b3b9f854b"
        },
        {
          "url": "https://git.kernel.org/stable/c/89184909634e50d086d86d8a0c03fc86fe8d889f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e690afea5c876a4abfa2978c6a664460ed7d1217"
        },
        {
          "url": "https://git.kernel.org/stable/c/298821692d447c2f7b1bc9ef41cd88a31bf56436"
        },
        {
          "url": "https://git.kernel.org/stable/c/c70b5bb6f04f77ef90e047d7edc2f476e206909f"
        },
        {
          "url": "https://git.kernel.org/stable/c/a298c7302ee9584a7a1ac1e8acbede8d98ab51a4"
        }
      ],
      "title": "watchdog: unregister PM notifier on watchdog unregister",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74329",
    "datePublished": "2026-08-15T05:58:23.059Z",
    "dateReserved": "2026-08-15T05:44:03.885Z",
    "dateUpdated": "2026-08-17T05:17:20.223Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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