Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a60fc3294a377204664b5484e4a487fa124155da before daacc9d1430b63f6bee6e5646def5d6414d35c4e; affected a60fc3294a377204664b5484e4a487fa124155da before aa03698bb28d3be5ee180adb185395054b342b04; affected a60fc3294a377204664b5484e4a487fa124155da before 627366c51145a07f675b1800fb5ea2ec960bd900 |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.18.57 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.