CVE-2026-97973

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

net: macb: destroy the phylink instance on the probe error path

macb mii init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb alloc tieoff() or register netdev() leaks the instance.

Destroy it at err out unregister mdio, which is only reachable once macb mii init() has succeeded, so bp->phylink is valid there.