hwmon: (gpio-fan) Fix use-after-free in alarm work
In the Linux kernel, the following vulnerability has been resolved: hwmon: (gpio-fan) Fix use-after-free in alarm work fan_alarm_irq_handler() queues fan_data->alarm_work, but nothing cancels it. fan_alarm_notify() dereferences fan_data and its hwmon device. On unbind, devres frees the interrupt, which only waits for the handler itself, and then releases the hwmon device and fan_data, so a pending fan_alarm_notify() can run after those frees. Replace INIT_WORK() with devm_work_autocancel(), registered before devm_request_irq(). The devres cleanup then frees the interrupt first, so no new work can be queued, and cancels the work while fan_data and the hwmon device are still alive. This issue was found by an in-house static analysis tool.
CVE-2026-97582
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-97582
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "594c62eea7c82f526054496e9fa9b895122a8016",
"versionType": "git"
},
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "6e67d9bdac810edacef78cbaeedd34445aa8ceb7",
"versionType": "git"
},
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "e9fc7d53b2eb34c0a607d1659f49b46911aaf16c",
"versionType": "git"
},
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "9b12bd724db9db318e3a68be17693583dc29a066",
"versionType": "git"
},
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "30755d3a5782cd704c8921cac8ee66dffe4383ea",
"versionType": "git"
},
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "c6ab7f855891877a16d2e2ddf0cd0305fd098a85",
"versionType": "git"
},
{
"status": "affected",
"version": "d6fe1360f42e86262153927986dea6502daff703",
"lessThan": "a2471ed17b0e6ff7bfb6b2ea8e6e5b04c309d293",
"versionType": "git"
}
],
"programFiles": [
"drivers/hwmon/gpio-fan.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.37"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.37",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hwmon/gpio-fan.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97582
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38026 · Revision 1
- Added to Heist Feed
- Publisher date