CVE-2026-98594

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

tg3: clean up PHYLIB resources on probe failure

tg3 get invariants() can register an MDIO bus and connect a PHY for USE PHYLIB devices. If tg3 init one() later fails, its common error path releases the mappings and netdev without undoing those PHYLIB resources.

Disconnect the PHY and unregister the MDIO bus before the remaining teardown. Guard PHY cleanup with USE PHYLIB to match tg3 phy init(), and call tg3 mdio fini() unconditionally to match tg3 mdio init(). The existing IS CONNECTED and MDIOBUS INITED flags make both helpers safe when initialization only completed partially.

This issue was identified during our ongoing static-analysis research while reviewing kernel code.