In the Linux kernel, the following vulnerability has been resolved:
idpf: fix kernel panic on unknown packet types
In the very rare case where a packet type is unknown to the driver, idpfrxprocessskbfields would return early without calling ethtypetrans to set the skb protocol / the network layer handler. This is especially problematic if tcpdump is running when such a packet is received, i.e. it would cause a kernel panic.
Instead, call ethtypetrans for every single packet, even when the packet type is unknown.