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

usb: xhci: prevent potential failure in handle_tx_event() for Transfer events without TRB

Some transfer events don't always point to a TRB, and consequently don't
have a endpoint ring. In these cases, function handle_tx_event() should
not proceed, because if 'ep->skip' is set, the pointer to the endpoint
ring is used.

To prevent a potential failure and make the code logical, return after
checking the completion code for a Transfer event without TRBs.

kernel.org https://git.kernel.org/stable/c/1f4a10cb826fdec5cd442df010bcb3043bfd6464 [No types assigned]

kernel.org https://git.kernel.org/stable/c/66cb618bf0bb82859875b00eeffaf223557cb416 [No types assigned]

kernel.org https://git.kernel.org/stable/c/69bed24c82139bbad0a78a075e1834a2ea7bd064 [No types assigned]

kernel.org https://git.kernel.org/stable/c/948554f1bb16e15b90006c109c3a558c66d4c4ac [No types assigned]

kernel.org https://git.kernel.org/stable/c/9a24eb8010c2dc6a2eba56e3eb9fc07d14ffe00a [No types assigned]

kernel.org https://git.kernel.org/stable/c/c0ee01e8ba19ff7edc98f68a114d4789faa219b9 [No types assigned]