In the Linux kernel, the following vulnerability has been resolved:
hwmon: (lm90) Stop work before releasing hwmon device
Sashiko reports:
In lm90_probe(), the devm action to cancel the alert_work and report_work
(lm90_restore_conf) is registered in lm90_init_client() before
devm_hwmon_device_register_with_info() is called.
Because devm executes cleanup actions in reverse order during module
unbind or probe failure, the hwmon device is unregistered and freed first.
If lm90_alert_work() or lm90_report_alarms() runs in the window between
the hwmon device being freed and the delayed works being cancelled,
lm90_update_alarms() will dereference the freed data->hwmon_dev here.
Fix the problem by canceling the workers separately after registering
the hwmon device and before registering the interrupt handler. This ensures
that the workers are canceled after interrupts are disabled and before
the hwmon device is released. Add "shutdown" flag to indicate that device
shutdown is in progress to prevent workers from being re-armed.
References
Configurations
Configuration 1 (hide)
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History
30 Oct 2026, 13:19
| Type | Values Removed | Values Added |
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| References |
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21 Oct 2026, 13:19
| Type | Values Removed | Values Added |
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13 Oct 2026, 19:19
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.7 |
| First Time |
Linux
Linux linux Kernel |
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| CPE | cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
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| CWE | CWE-362 | |
| References | () https://git.kernel.org/stable/c/479e297526aeb19c745eac5c1897f455f83dc5f8 - Patch | |
| References | () https://git.kernel.org/stable/c/b09a45601094c7f4ec4db8090b825fa61e169d93 - Patch | |
| References | () https://git.kernel.org/stable/c/c98107817b0f6cdf51adc5e84e75c39ee25d8b28 - Patch |
Information
Published : 2026-07-19 16:17
Updated : 2026-10-30 13:19
NVD link : CVE-2026-64038
Mitre link : CVE-2026-64038
CVE.ORG link : CVE-2026-64038
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
