{"api_version":"1","generated_at":"2026-08-22T18:40:13+00:00","cve":"CVE-2026-74687","urls":{"html":"https://cve.report/CVE-2026-74687","api":"https://cve.report/api/cve/CVE-2026-74687.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74687","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74687"},"summary":{"title":"watchdog: at91sam9_wdt: prevent timer rearm during teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: at91sam9_wdt: prevent timer rearm during teardown\n\nat91_ping() rearms the watchdog timer from its callback. timer_delete()\nneither waits for a running callback nor prevents it from rearming the\ntimer, so probe failure or driver removal can leave the timer accessing the\ndevm-allocated at91wdt after it has been freed.\n\nUse timer_shutdown_sync() on both teardown paths. It waits for a running\ncallback and rejects any attempt by the callback to rearm the timer.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:43","updated_at":"2026-08-22 16:16:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783","name":"https://git.kernel.org/stable/c/8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b7949b0a7d998013b7ec8617a0ef5b07cca80be4","name":"https://git.kernel.org/stable/c/b7949b0a7d998013b7ec8617a0ef5b07cca80be4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed","name":"https://git.kernel.org/stable/c/29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74687","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74687","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5161b31dc39a6d6dadc95f298de48a725b73ada8 29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5161b31dc39a6d6dadc95f298de48a725b73ada8 b7949b0a7d998013b7ec8617a0ef5b07cca80be4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5161b31dc39a6d6dadc95f298de48a725b73ada8 8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/watchdog/at91sam9_wdt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed","status":"affected","version":"5161b31dc39a6d6dadc95f298de48a725b73ada8","versionType":"git"},{"lessThan":"b7949b0a7d998013b7ec8617a0ef5b07cca80be4","status":"affected","version":"5161b31dc39a6d6dadc95f298de48a725b73ada8","versionType":"git"},{"lessThan":"8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783","status":"affected","version":"5161b31dc39a6d6dadc95f298de48a725b73ada8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/watchdog/at91sam9_wdt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.14"},{"lessThan":"3.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"3.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"3.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"3.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: at91sam9_wdt: prevent timer rearm during teardown\n\nat91_ping() rearms the watchdog timer from its callback. timer_delete()\nneither waits for a running callback nor prevents it from rearming the\ntimer, so probe failure or driver removal can leave the timer accessing the\ndevm-allocated at91wdt after it has been freed.\n\nUse timer_shutdown_sync() on both teardown paths. It waits for a running\ncallback and rejects any attempt by the callback to rearm the timer."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:32:52.792Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/29fe74c9aa69d78c1c6a3930f1d9fc5db71a6eed"},{"url":"https://git.kernel.org/stable/c/b7949b0a7d998013b7ec8617a0ef5b07cca80be4"},{"url":"https://git.kernel.org/stable/c/8444d66aa6b6e7fe0a26fa1a00a11cb4d0523783"}],"title":"watchdog: at91sam9_wdt: prevent timer rearm during teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74687","datePublished":"2026-08-22T15:32:52.792Z","dateReserved":"2026-08-15T05:44:03.926Z","dateUpdated":"2026-08-22T15:32:52.792Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:43","lastModifiedDate":"2026-08-22 16:16:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74687","Ordinal":"1","Title":"watchdog: at91sam9_wdt: prevent timer rearm during teardown","CVE":"CVE-2026-74687","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74687","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: at91sam9_wdt: prevent timer rearm during teardown\n\nat91_ping() rearms the watchdog timer from its callback. timer_delete()\nneither waits for a running callback nor prevents it from rearming the\ntimer, so probe failure or driver removal can leave the timer accessing the\ndevm-allocated at91wdt after it has been freed.\n\nUse timer_shutdown_sync() on both teardown paths. It waits for a running\ncallback and rejects any attempt by the callback to rearm the timer.","Type":"Description","Title":"watchdog: at91sam9_wdt: prevent timer rearm during teardown"}]}}}