CVE-2026-98909

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

net: cpsw new: unregister devlink on port registration failure

cpsw probe() registers devlink before registering the CPSW ports.

If cpsw register ports() fails, the error path only unregisters the notifiers and then releases the lower level resources. It does not undo the successful cpsw register devlink() call, leaving the devlink instance and its parameters registered after probe has failed.

Add a devlink cleanup label for the path where devlink registration has already succeeded, and use it when port registration fails.