{"id":"CVE-2026-97582","state":"PUBLISHED","title":"hwmon: (gpio-fan) Fix use-after-free in alarm work","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (gpio-fan) Fix use-after-free in alarm work\n\nfan_alarm_irq_handler() queues fan_data->alarm_work, but nothing\ncancels it.  fan_alarm_notify() dereferences fan_data and its hwmon\ndevice.  On unbind, devres frees the interrupt, which only waits for\nthe handler itself, and then releases the hwmon device and fan_data,\nso a pending fan_alarm_notify() can run after those frees.\n\nReplace INIT_WORK() with devm_work_autocancel(), registered before\ndevm_request_irq().  The devres cleanup then frees the interrupt\nfirst, so no new work can be queued, and cancels the work while\nfan_data and the hwmon device are still alive.\n\nThis issue was found by an in-house static analysis tool.","publishedAt":"2026-09-25T10:22:03.041Z","updatedAt":"2026-10-30T12:37:29.592Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"7f96803f612134f585ab3b39e6d5b2d4b9c0606f","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"594c62eea7c82f526054496e9fa9b895122a8016","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"6e67d9bdac810edacef78cbaeedd34445aa8ceb7","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"e9fc7d53b2eb34c0a607d1659f49b46911aaf16c","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"9b12bd724db9db318e3a68be17693583dc29a066","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"30755d3a5782cd704c8921cac8ee66dffe4383ea","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"c6ab7f855891877a16d2e2ddf0cd0305fd098a85","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/gpio-fan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.37","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.37","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/gpio-fan.c"]}],"references":["https://git.kernel.org/stable/c/7f96803f612134f585ab3b39e6d5b2d4b9c0606f","https://git.kernel.org/stable/c/594c62eea7c82f526054496e9fa9b895122a8016","https://git.kernel.org/stable/c/6e67d9bdac810edacef78cbaeedd34445aa8ceb7","https://git.kernel.org/stable/c/e9fc7d53b2eb34c0a607d1659f49b46911aaf16c","https://git.kernel.org/stable/c/9b12bd724db9db318e3a68be17693583dc29a066","https://git.kernel.org/stable/c/30755d3a5782cd704c8921cac8ee66dffe4383ea","https://git.kernel.org/stable/c/c6ab7f855891877a16d2e2ddf0cd0305fd098a85","https://git.kernel.org/stable/c/a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293"],"weaknesses":[],"ingestedAt":"2026-10-30T12:56:04.490Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97582.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97582","state":"PUBLISHED","datePublished":"2026-09-25T10:22:03.041Z","dateUpdated":"2026-10-30T12:37:29.592Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-24T16:01:01.156Z"},"containers":{"cna":{"title":"hwmon: (gpio-fan) Fix use-after-free in alarm work","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (gpio-fan) Fix use-after-free in alarm work\n\nfan_alarm_irq_handler() queues fan_data->alarm_work, but nothing\ncancels it.  fan_alarm_notify() dereferences fan_data and its hwmon\ndevice.  On unbind, devres frees the interrupt, which only waits for\nthe handler itself, and then releases the hwmon device and fan_data,\nso a pending fan_alarm_notify() can run after those frees.\n\nReplace INIT_WORK() with devm_work_autocancel(), registered before\ndevm_request_irq().  The devres cleanup then frees the interrupt\nfirst, so no new work can be queued, and cancels the work while\nfan_data and the hwmon device are still alive.\n\nThis issue was found by an in-house static analysis tool."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"7f96803f612134f585ab3b39e6d5b2d4b9c0606f","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"594c62eea7c82f526054496e9fa9b895122a8016","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"6e67d9bdac810edacef78cbaeedd34445aa8ceb7","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"e9fc7d53b2eb34c0a607d1659f49b46911aaf16c","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"9b12bd724db9db318e3a68be17693583dc29a066","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"30755d3a5782cd704c8921cac8ee66dffe4383ea","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"c6ab7f855891877a16d2e2ddf0cd0305fd098a85","versionType":"git"},{"version":"d6fe1360f42e86262153927986dea6502daff703","status":"affected","lessThan":"a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/gpio-fan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.37","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.37","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/gpio-fan.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7f96803f612134f585ab3b39e6d5b2d4b9c0606f"},{"url":"https://git.kernel.org/stable/c/594c62eea7c82f526054496e9fa9b895122a8016"},{"url":"https://git.kernel.org/stable/c/6e67d9bdac810edacef78cbaeedd34445aa8ceb7"},{"url":"https://git.kernel.org/stable/c/e9fc7d53b2eb34c0a607d1659f49b46911aaf16c"},{"url":"https://git.kernel.org/stable/c/9b12bd724db9db318e3a68be17693583dc29a066"},{"url":"https://git.kernel.org/stable/c/30755d3a5782cd704c8921cac8ee66dffe4383ea"},{"url":"https://git.kernel.org/stable/c/c6ab7f855891877a16d2e2ddf0cd0305fd098a85"},{"url":"https://git.kernel.org/stable/c/a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:37:29.592Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.37","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}