usb: typec: ucsi: unregister debugfs entries on teardown (CVE-2026-100079) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-100079

usb: typec: ucsi: unregister debugfs entries on teardown

Answer in brief

CVE-2026-100079 records a Unknown severity vulnerability in usb: typec: ucsi: unregister debugfs entries on teardown. 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 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 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	>=df0383ffad64dc09954a60873c1e202b47f08d90 <fb7393519908befdc094be4ea913f582adbf2f7c \|\| >=df0383ffad64dc09954a60873c1e202b47f08d90 <7177c215e69658adbd2f2fc5b72e14be9208d2ba \|\| >=df0383ffad64dc09954a60873c1e202b47f08d90 <1f44d001620fd3caa30619a9bc73e9d15555408b \|\| >=df0383ffad64dc09954a60873c1e202b47f08d90 <62efee351566321ad72a4abaf6eb7d972590585d \|\| >=df0383ffad64dc09954a60873c1e202b47f08d90 <eed73a65ab609b79d53de88cccc34b36dfe753c4	fb7393519908befdc094be4ea913f582adbf2f7c, 7177c215e69658adbd2f2fc5b72e14be9208d2ba, 1f44d001620fd3caa30619a9bc73e9d15555408b, 62efee351566321ad72a4abaf6eb7d972590585d, eed73a65ab609b79d53de88cccc34b36dfe753c4
Linux/Linuxgeneric	6.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to fb7393519908befdc094be4ea913f582adbf2f7c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: unregister debugfs entries on teardown ucsi_register() creates per-instance debugfs entries, but ucsi_unregister() keeps them around until ucsi_destroy(). Drivers like ucsi_glink that unregister/register the same UCSI instance across remoteproc restart then try to create an already existing debugfs directory and log: debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi' Unregister debugfs entries as part of ucsi_unregister(), and clear ucsi->debugfs after freeing it so repeated unregister paths remain safe.

Quoted source text, attributed separately from HOL analysis.