CVE-2026-43231 media: radio-keene: fix memory leak in error path

What is CVE-2026-43231?

CVE-2026-43231 is a medium-severity denial of service vulnerability in Linux kernel, published on 6 May 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:

media: radio-keene: fix memory leak in error path

Fix a memory leak in usb_keene_probe(). The v4l2 control handler is initialized and controls are added, but if v4l2_device_register() or video_register_device() fails afterward, the handler was never freed, leaking memory.

Add v4l2_ctrl_handler_free() call in the err_v4l2 error path to ensure the control handler is properly freed for all error paths after it is initialized.

Weakness: CWE-401

Which versions are affected by CVE-2026-43231?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43231?

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-2026-43231 being exploited?

There is no known exploitation of CVE-2026-43231 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 BELL-CVE-2026-43231, DEBIAN-CVE-2026-43231, GHSA-gqg8-ww6w-xc5v, ROOT-OS-DEBIAN-11-CVE-2026-43231, ROOT-OS-UBUNTU-2204-CVE-2026-43231, ROOT-OS-UBUNTU-2404-CVE-2026-43231 and 1 more.