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Change History

In the Linux kernel, the following vulnerability has been resolved:

HID: appletb-kbd: fix "appletb_backlight" backlight device reference counting

During appletb_kbd_probe, probe attempts to get the backlight device
by name. When this happens backlight_device_get_by_name looks for a
device in the backlight class which has name "appletb_backlight" and
upon finding a match it increments the reference count for the device
and returns it to the caller. However this reference is never released
leading to a reference leak.

Fix this by decrementing the backlight device reference count on removal
via put_device and on probe failure.

https://git.kernel.org/stable/c/4540e41e753a7d69ecd3f5bad51fe620205c3a18

https://git.kernel.org/stable/c/751d5437112a3f387de4ef6d2d1c131068ff7627