platform/chrome: cros_ec_debugfs: Unregister panic notifier (CVE-2026-90404) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90404

platform/chrome: cros_ec_debugfs: Unregister panic notifier

Answer in brief

CVE-2026-90404 records a Unknown severity vulnerability in platform/chrome: cros_ec_debugfs: Unregister panic notifier. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=d90fa2c64d59f5f151beeef5dbc599784b3391ca <56989e2a9c292ff7689603feed41d030301ca636 \|\| >=d90fa2c64d59f5f151beeef5dbc599784b3391ca <a5d3128b06ccfc398c2e456fddebadce52310bd8 \|\| >=d90fa2c64d59f5f151beeef5dbc599784b3391ca <e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f \|\| >=d90fa2c64d59f5f151beeef5dbc599784b3391ca <05c1081ae4503e45b934b390350f942db3208892 \|\| >=d90fa2c64d59f5f151beeef5dbc599784b3391ca <e5954d3031fb55dd31aa59bae477d63c68e941c0	56989e2a9c292ff7689603feed41d030301ca636, a5d3128b06ccfc398c2e456fddebadce52310bd8, e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f, 05c1081ae4503e45b934b390350f942db3208892, e5954d3031fb55dd31aa59bae477d63c68e941c0
Linux/Linuxgeneric	6.3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 56989e2a9c292ff7689603feed41d030301ca636 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.