HID: mcp2221: stop device IO before hid_hw_stop

Answer in brief

CVE-2026-89623 records a Unknown severity vulnerability in HID: mcp2221: stop device IO before hid_hw_stop. 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 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 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	>=d4b50ac06ea6e47bdd2b04e97d1090c673c80645 <0ae90a19e6b5a8557d25d95facb7e01c9c07af38 \|\| >=d4b50ac06ea6e47bdd2b04e97d1090c673c80645 <c99ba6c234d4d537c317336376b78c088174034a \|\| >=d4b50ac06ea6e47bdd2b04e97d1090c673c80645 <2eda1513f573945c1e3a0090341f3d28740463b1 \|\| >=d4b50ac06ea6e47bdd2b04e97d1090c673c80645 <dca151633c0fde90935311c60e7cfc064aa56134	0ae90a19e6b5a8557d25d95facb7e01c9c07af38, c99ba6c234d4d537c317336376b78c088174034a, 2eda1513f573945c1e3a0090341f3d28740463b1, dca151633c0fde90935311c60e7cfc064aa56134
Linux/Linuxgeneric	>=6.6.8 <6.12.109 \|\| >=6.6.8 <6.18.50 \|\| >=6.6.8 <7.2.4 \|\| >=6.6.8 <7.3-rc1	6.12.109, 6.18.50, 7.2.4, 7.3-rc1

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 0ae90a19e6b5a8557d25d95facb7e01c9c07af38; Linux/Linux to 6.12.109 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: stop device IO before hid_hw_stop Quiesce device IO at the start of the devm cleanup callback mcp2221_hid_unregister() so that incoming HID reports cannot race with hardware teardown during probe failure or device removal, addressing a potential use-after-free. Guard the call to hid_device_io_stop() with io_started. On normal removal hid_device_remove() has already cleared io_started before the devres group is released, so an unconditional call would otherwise hit the !io_started path and emit a spurious "io already stopped" warning on every removal. The guard preserves the probe-failure balancing, where io_started is still set after hid_device_io_start(), while staying silent on the normal removal path.

Quoted source text, attributed separately from HOL analysis.