What’s Vulnerable › Vulnerabilities

CVE-2026-90404: platform/chrome: cros_ec_debugfs: Unregister panic notifier

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

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.

Affected products

• Linux kernel: 6.3 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/05c1081ae4503e45b934b390350f942db3208892
• 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/e5954d3031fb55dd31aa59bae477d63c68e941c0

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