Description
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().
Affected products
- Linux / Linux936ee2675eee1faca0dcdfa79165c7990422e0fc – bace7b99bfa555fe833aee8827b8004c43666d02
- Linux / Linux936ee2675eee1faca0dcdfa79165c7990422e0fc – 1f34ea5f6114011092d9a5c8b901ad6741144a1d
- Linux / Linux936ee2675eee1faca0dcdfa79165c7990422e0fc – 1c1e0fc88d6ef65bf15d517853251f75ab9d18c3
- Linux / Linux5.15 – 5.15
- Linux / Linux0 – 5.15
- Linux / Linux6.18.36 – 6.18.*
- Linux / Linux7.0.13 – 7.0.*
- Linux / Linux7.1 – *