CVE-2026-53222

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.

• CWE-401

• https://git.kernel.org/stable/c/627366c51145a07f675b1800fb5ea2ec960bd900Patch
• https://git.kernel.org/stable/c/aa03698bb28d3be5ee180adb185395054b342b04Patch

Published

Jun 25, 2026

Last Modified

Jul 2, 2026

Status

Analyzed

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