Description
In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: fix resource freeing order Commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable events") added a call to ptp_disable_all_events() which changes the configuration of pins if they support EXTTS events. In ptp_ocp_detach() pins resources are freed before ptp_clock_unregister() 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 synchronize_irq() after HW is configured to stop producing irqs and no irqs are in-flight.
Affected products
- Linux / Linuxa60fc3294a377204664b5484e4a487fa124155da – aa03698bb28d3be5ee180adb185395054b342b04
- Linux / Linuxa60fc3294a377204664b5484e4a487fa124155da – 627366c51145a07f675b1800fb5ea2ec960bd900
- Linux / Linux6.18 – 6.18
- Linux / Linux0 – 6.18
- Linux / Linux7.0.13 – 7.0.*
- Linux / Linux7.1 – *