CVE-2026-53222

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

ptp: ocp: fix resource freeing order

Commit a60fc3294a37 ("ptp: rework ptpclockunregister() to disable events") added a call to ptpdisableallevents() which changes the configuration of pins if they support EXTTS events. In ptpocpdetach() pins resources are freed before ptpclockunregister() and it leads to use-after-free during driver removal. Fix it by changing the order of free/unregister calls. To avoid irq handler running on the other core while ptp device unregistering, call synchronizeirq() after HW is configured to stop producing irqs and no irqs are in-flight.