power: supply: bq256xx: drain usb_work before freeing the charger (CVE-2026-89474) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89474

power: supply: bq256xx: drain usb_work before freeing the charger

Answer in brief

CVE-2026-89474 records a Unknown severity vulnerability in power: supply: bq256xx: drain usb_work before freeing the charger. 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	>=32e4978bb920d047fe5de3ea42d176f267c01f63 <9a467bd1e6811011026ad4c8de701b940d88a00c \|\| >=32e4978bb920d047fe5de3ea42d176f267c01f63 <9e1aba34df9a87d53460888e05718717c0f69343 \|\| >=32e4978bb920d047fe5de3ea42d176f267c01f63 <c8addb842ae8dcf69c15fc976e33e3bd538a41d7 \|\| >=32e4978bb920d047fe5de3ea42d176f267c01f63 <2dd6cd823777bea6d9a880a12a92a73ec76aee0b	9a467bd1e6811011026ad4c8de701b940d88a00c, 9e1aba34df9a87d53460888e05718717c0f69343, c8addb842ae8dcf69c15fc976e33e3bd538a41d7, 2dd6cd823777bea6d9a880a12a92a73ec76aee0b
Linux/Linuxgeneric	5.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 9a467bd1e6811011026ad4c8de701b940d88a00c 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: power: supply: bq256xx: drain usb_work before freeing the charger The USB-PHY notifier queues usb_work, whose handler calls power_supply_changed(bq->charger). The reset devm action only unregisters the notifier and was registered before the power supplies, so devm frees bq->charger on unwind before the action runs; a usb_work still queued can then dereference it. Register the reset action after the power supplies, so it unregisters the notifiers and drains usb_work before the supplies are released. Initialize usb_work and obtain the PHY references before registering the notifiers, so the worker cannot run before the supplies exist. Found by static analysis.

Quoted source text, attributed separately from HOL analysis.