CVE-2026-63977

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

dpll: zl3073x: use __dpll_device_change_ntf() and remove change_work

The change_work was introduced to send device change notifications

from DPLL device callbacks without deadlocking on dpll_lock, since

the callbacks are already invoked under that lock. Now that

__dpll_device_change_ntf() is exported for callers that already

hold dpll_lock, use it directly and remove the change_work

infrastructure entirely.

This eliminates a race condition where change_work could be

re-scheduled after cancel_work_sync() during device teardown,

potentially causing the handler to dereference a freed or NULL

dpll_dev pointer.