CVE-2026-64241 gpio: rockchip: teardown bugs and resource leaks

What is CVE-2026-64241?

CVE-2026-64241 is a medium-severity denial of service vulnerability in Linux kernel, published on 24 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

gpio: rockchip: teardown bugs and resource leaks

Address several teardown issues and resource leaks in the driver's remove path and error handling:

1. Debounce clock reference leak: The debounce clock (bank->db_clk) is obtained using of_clk_get() which increments the clock's reference count, but clk_put() is never called. Register a devm action to cleanly release it on unbind. Note that of_clk_get(..., 1) remains necessary over devm_clk_get() because the DT binding does not define clock-names, precluding name-based lookup.

2. Unregistered chained IRQ handler: The chained IRQ handler is not disconnected in remove(). If a stray interrupt fires after the driver is removed, the kernel attempts to execute a stale handler, leading to a panic. Fix this by clearing the handler in remove().

3. IRQ domain leak: The linear IRQ domain and its generic chips are allocated manually during probe but never removed. Remove the IRQ domain during driver teardown to free the associated generic chips and mappings.

[Bartosz: don't emit an error message on devres allocation failure]

Weakness: CWE-401

Which versions are affected by CVE-2026-64241?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-64241?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-64241 being exploited?

There is no known exploitation of CVE-2026-64241 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-93366, BELL-CVE-2026-64241, DEBIAN-CVE-2026-64241, GHSA-vwqh-89qp-xcpw, ROOT-OS-UBUNTU-2204-CVE-2026-64241, UBUNTU-CVE-2026-64241.