{"id":"CVE-2026-74329","state":"PUBLISHED","title":"watchdog: unregister PM notifier on watchdog unregister","description":"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_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.","publishedAt":"2026-08-15T05:58:23.059Z","updatedAt":"2026-08-17T05:17:20.223Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"cd2d1b1f99308f7680d75a377daaff363f1cc736","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"5d9b58ec6f5de5e159a570d419b1b08b3b9f854b","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"89184909634e50d086d86d8a0c03fc86fe8d889f","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"e690afea5c876a4abfa2978c6a664460ed7d1217","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"298821692d447c2f7b1bc9ef41cd88a31bf56436","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"c70b5bb6f04f77ef90e047d7edc2f476e206909f","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"a298c7302ee9584a7a1ac1e8acbede8d98ab51a4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/watchdog/watchdog_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/watchdog/watchdog_core.c"]}],"references":["https://git.kernel.org/stable/c/cd2d1b1f99308f7680d75a377daaff363f1cc736","https://git.kernel.org/stable/c/5d9b58ec6f5de5e159a570d419b1b08b3b9f854b","https://git.kernel.org/stable/c/89184909634e50d086d86d8a0c03fc86fe8d889f","https://git.kernel.org/stable/c/e690afea5c876a4abfa2978c6a664460ed7d1217","https://git.kernel.org/stable/c/298821692d447c2f7b1bc9ef41cd88a31bf56436","https://git.kernel.org/stable/c/c70b5bb6f04f77ef90e047d7edc2f476e206909f","https://git.kernel.org/stable/c/a298c7302ee9584a7a1ac1e8acbede8d98ab51a4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74329.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74329","state":"PUBLISHED","datePublished":"2026-08-15T05:58:23.059Z","dateUpdated":"2026-08-17T05:17:20.223Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.885Z"},"containers":{"cna":{"title":"watchdog: unregister PM notifier on watchdog unregister","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->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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"cd2d1b1f99308f7680d75a377daaff363f1cc736","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"5d9b58ec6f5de5e159a570d419b1b08b3b9f854b","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"89184909634e50d086d86d8a0c03fc86fe8d889f","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"e690afea5c876a4abfa2978c6a664460ed7d1217","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"298821692d447c2f7b1bc9ef41cd88a31bf56436","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"c70b5bb6f04f77ef90e047d7edc2f476e206909f","versionType":"git"},{"version":"60bcd91aafd22ef62cef9ae2037fa2e1d4da2fb3","status":"affected","lessThan":"a298c7302ee9584a7a1ac1e8acbede8d98ab51a4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/watchdog/watchdog_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/watchdog/watchdog_core.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:17:20.223Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}