CVE-2024-43830

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> leds: trigger: Unregister sysfs attributes before calling deactivate()<br /> <br /> Triggers which have trigger specific sysfs attributes typically store<br /> related data in trigger-data allocated by the activate() callback and<br /> freed by the deactivate() callback.<br /> <br /> Calling device_remove_groups() after calling deactivate() leaves a window<br /> where the sysfs attributes show/store functions could be called after<br /> deactivation and then operate on the just freed trigger-data.<br /> <br /> Move the device_remove_groups() call to before deactivate() to close<br /> this race window.<br /> <br /> This also makes the deactivation path properly do things in reverse order<br /> of the activation path which calls the activate() callback before calling<br /> device_add_groups().