Unknown

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

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.

Published Sep 17, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.21%

ahead of 10% of scored CVEs · Oct 16, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ d90fa2c64d59f5f151beeef5dbc599784b3391ca and < 56989e2a9c292ff7689603feed41d030301ca636≥ d90fa2c64d59f5f151beeef5dbc599784b3391ca and < a5d3128b06ccfc398c2e456fddebadce52310bd8≥ d90fa2c64d59f5f151beeef5dbc599784b3391ca and < e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f≥ d90fa2c64d59f5f151beeef5dbc599784b3391ca and < 05c1081ae4503e45b934b390350f942db3208892≥ d90fa2c64d59f5f151beeef5dbc599784b3391ca and < e5954d3031fb55dd31aa59bae477d63c68e941c0version 6.3	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 16, 2026 · 2 reading(s) · max 0.21%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 17, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

5 on the record

git.kernel.org/stable/c/a5d3128b06ccfc398c2e456fddebadce52310bd8
NIST National Vulnerability Database
git.kernel.org/stable/c/e2cbe14361d7cb0b5abd66d87f3afa0e16efde9f
NIST National Vulnerability Database
git.kernel.org/stable/c/56989e2a9c292ff7689603feed41d030301ca636
NIST National Vulnerability Database
git.kernel.org/stable/c/e5954d3031fb55dd31aa59bae477d63c68e941c0
NIST National Vulnerability Database
git.kernel.org/stable/c/05c1081ae4503e45b934b390350f942db3208892
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-98868 dm-pcache: reject a kset that overruns its segment 6h
Unknown CVE-2026-98867 dm-pcache: bound the logical key offset from persistent memory 6h
Unknown CVE-2026-98866 sched/cache: Introduce task_struct->sched_cache_grp to fix UAF 6h
Unknown CVE-2026-98861 fprobe: Use guard(rcu_sched_notrace) and check rcu_is_watching() 6h
Unknown CVE-2026-98856 kprobes: Skip disarmed probes when checking optkprobe overlap 6h
Unknown CVE-2026-98857 ipvs: bound LBLCR and LBLC cache growth 6h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-90404 is "platform/chrome: cros_ec_debugfs: Unregister panic notifier", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.21% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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