Answer in brief
CVE-2026-100079 records a Medium severity (CVSS 5.5) 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.
CVSS is 5.5. 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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| 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 |
Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
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.