CVE-2024-42224 net: dsa: mv88e6xxx: Correct check for empty list

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: Correct check for empty list Since commit a3c53be55c95 "net: dsa: mv88e6xxx: Support multiple MDIO busses" mv88e6xxxdefaultmdiobus has checked that the return value of listfirstentry is non-NULL. This appears...