CVE-2026-43231

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

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

Fix a memory leak in usbkeeneprobe(). The v4l2 control handler is initialized and controls are added, but if v4l2deviceregister() or videoregisterdevice() fails afterward, the handler was never freed, leaking memory.

Add v4l2ctrlhandlerfree() call in the errv4l2 error path to ensure the control handler is properly freed for all error paths after it is initialized.