In the Linux kernel, the following vulnerability has been resolved:
hid: cp2112: Fix duplicate workqueue initialization
Previously the cp2112 driver called INITDELAYEDWORK within cp2112gpioirqstartup, resulting in duplicate initilizations of the workqueue on subsequent IRQ startups following an initial request. This resulted in a warning in setworkdata in workqueue.c, as well as a rare NULL dereference within processone_work in workqueue.c.
Initialize the workqueue within _probe instead.