CVE-2026-53226

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

gpio: rockchip: fix generic IRQ chip leak on remove

The driver allocates domain generic chips using

irq_alloc_domain_generic_chips() during probe. However, on driver

remove/teardown, the generic chips are not automatically freed when the

IRQ domain is removed because the domain flags do not include

IRQ_DOMAIN_FLAG_DESTROY_GC.

This causes both the domain generic chips structure and the associated

generic chips to be leaked. Additionally, the generic chips remain on

the global gc_list and may later be visited by generic IRQ chip suspend,

resume, or shutdown callbacks after the GPIO bank has been removed,

potentially resulting in a use-after-free and kernel crash.

Fix the resource leak by explicitly calling

irq_domain_remove_generic_chips() before removing the IRQ domain in

rockchip_gpio_remove().