Use-after-free in Linux kernel - CVE-2026-53226

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in the rockchip gpio irq domain handling in drivers/gpio/gpio-rockchip.c when removing a gpio bank and later processing generic irq chip suspend, resume, or shutdown callbacks. A local user can trigger device removal so that stale generic irq chip entries are later dereferenced to cause a denial of service.

The issue is associated with leaked domain generic chip structures that remain on the global gc_list after the gpio bank has been removed.

Affected software

How to mitigate CVE-2026-53226

External References

• https://git.kernel.org/stable/c/1c1e0fc88d6ef65bf15d517853251f75ab9d18c3
• https://git.kernel.org/stable/c/1f34ea5f6114011092d9a5c8b901ad6741144a1d
• https://git.kernel.org/stable/c/bace7b99bfa555fe833aee8827b8004c43666d02

Related Security Bulletins

• Use-after-free in Linux kernel gpio driver
• Debian update for linux