CVE-2025-22116

/// Technical description

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

idpf: check error for register_netdev() on init

Current init logic ignores the error code from register_netdev(),

which will cause WARN_ON() on attempt to unregister it, if there was one,

and there is no info for the user that the creation of the netdev failed.

WARNING: CPU: 89 PID: 6902 at net/core/dev.c:11512 unregister_netdevice_many_notify+0x211/0x1a10

...

[ 3707.563641] unregister_netdev+0x1c/0x30

[ 3707.563656] idpf_vport_dealloc+0x5cf/0xce0 [idpf]

[ 3707.563684] idpf_deinit_task+0xef/0x160 [idpf]

[ 3707.563712] idpf_vc_core_deinit+0x84/0x320 [idpf]

[ 3707.563739] idpf_remove+0xbf/0x780 [idpf]

[ 3707.563769] pci_device_remove+0xab/0x1e0

[ 3707.563786] device_release_driver_internal+0x371/0x530

[ 3707.563803] driver_detach+0xbf/0x180

[ 3707.563816] bus_remove_driver+0x11b/0x2a0

[ 3707.563829] pci_unregister_driver+0x2a/0x250

Introduce an error check and log the vport number and error code.

On removal

/// 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