CVE-2026-89474

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

N/A
Published: September 11, 2026 at 07:43 PM UTC
Updated: October 19, 2026 at 09:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

32e4978bb920d047fe5de3ea42d176f267c01f635.12
Vendor states this is fixed in 2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8 (fixed)
Vendor states this is fixed in 2dd6cd823777bea6d9a880a12a92a73ec76aee0b (fixed)
Vendor states this is fixed in 9a467bd1e6811011026ad4c8de701b940d88a00c (fixed)
Vendor states this is fixed in 9dcfdf6c598301b278f0b3490eb2bf4f600524e2 (fixed)
Vendor states this is fixed in 9e1aba34df9a87d53460888e05718717c0f69343 (fixed)
Vendor states this is fixed in c8addb842ae8dcf69c15fc976e33e3bd538a41d7 (fixed)
Vendor states this is fixed in fd08d4dbbec07a44f01b0ddb041912be0dc88f8c (fixed)
Vendor states this is fixed in 5.12 (unaffected)
Vendor states this is fixed in 5.15.221 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.109 (unaffected)
Vendor states this is fixed in 6.18.50 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.4 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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