CVE-2026-98594

/// Technical description

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.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References