{"id":"CVE-2026-74329","title":"watchdog: unregister PM notifier on watchdog unregister","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: unregister PM notifier on watchdog unregister\n\nwatchdog_register_device() registers wdd->pm_nb when\nWDOG_NO_PING_ON_SUSPEND is set, but watchdog_unregister_de…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < cd2d1b1f99308f7680d75a377daaff363f1cc736","Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < 5d9b58ec6f5de5e159a570d419b1b08b3b9f854b","Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < 89184909634e50d086d86d8a0c03fc86fe8d889f","Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < e690afea5c876a4abfa2978c6a664460ed7d1217","Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < 298821692d447c2f7b1bc9ef41cd88a31bf56436","Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < c70b5bb6f04f77ef90e047d7edc2f476e206909f","Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < a298c7302ee9584a7a1ac1e8acbede8d98ab51a4","Linux 5.15"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:56:09.716497Z"},"published":"2026-08-15","updated":"2026-11-06","sourceUpdated":"2026-11-06T17:05:44.044Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74329","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"}],"tags":["cve.org"],"epss":0.00215,"epssPercentile":0.11893,"ingestedAt":"2026-11-06T18:00:12.570Z","slug":"CVE-2026-74329","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: unregister PM notifier on watchdog unregister\n\nwatchdog_register_device() registers wdd->pm_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->wd_data has\nbeen cleared by watchdog_dev_unregister().\n\nUnregister the PM notifier before tearing down the watchdog device.\n\n## Affected\n\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < cd2d1b1f99308f7680d75a377daaff363f1cc736`\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < 5d9b58ec6f5de5e159a570d419b1b08b3b9f854b`\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < 89184909634e50d086d86d8a0c03fc86fe8d889f`\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < e690afea5c876a4abfa2978c6a664460ed7d1217`\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < 298821692d447c2f7b1bc9ef41cd88a31bf56436`\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < c70b5bb6f04f77ef90e047d7edc2f476e206909f`\n- `Linux >= 60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3 < a298c7302ee9584a7a1ac1e8acbede8d98ab51a4`\n- `Linux 5.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}