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CVE-2024-43830 is a use-after-free race in the Linux kernel LED trigger subsystem. LED triggers with trigger-specific sysfs attributes commonly allocate associated trigger data during their activate() callback and free it during deactivate(). The vulnerable teardown ordering invoked deactivate() before unregistering the trigger's sysfs attribute groups. Concurrent sysfs show or store operations could therefore execute after deactivation and dereference trigger data that had already been freed. The fix unregisters the sysfs groups with device_remove_groups() before invoking deactivate(), matching the reverse order of activation.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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