In the Linux kernel, the following vulnerability has been resolved:
usb: core: Add lock to usbwakeupnotification()
Add a spin lock to usbwakeup notification to prevent a race condition with dereferencing freed memory. This could be hit by the xHCI driver as it calls this function from an IRQ and could race with the hubdisconnect() function, which properly grabs this lock to protect the state of the device.