CVE-2026-89474

Unknown

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.

SeverityUnknown
CVSS—
Exploit probability—
ProductLinux
PublishedSep 11, 2026
First seenSep 11, 2026

How to fix

Update
  • Linux Linux9dcfdf6c598301b278f0b3490eb2bf4f600524e2, fd08d4dbbec07a44f01b0ddb041912be0dc88f8c, 2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8, 9a467bd1e6811011026ad4c8de701b940d88a00c, 9e1aba34df9a87d53460888e05718717c0f69343, c8addb842ae8dcf69c15fc976e33e3bd538a41d7, 2dd6cd823777bea6d9a880a12a92a73ec76aee0b or later

Affected products

ProductAffected versionsFixed in
Linux Linux32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < 9dcfdf6c598301b278f0b3490eb2bf4f600524e2, 32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < fd08d4dbbec07a44f01b0ddb041912be0dc88f8c, 32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < 2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8, 32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < 9a467bd1e6811011026ad4c8de701b940d88a00c, 32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < 9e1aba34df9a87d53460888e05718717c0f69343, 32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < c8addb842ae8dcf69c15fc976e33e3bd538a41d7, 32e4978bb920d047fe5de3ea42d176f267c01f63 ≤ v < 2dd6cd823777bea6d9a880a12a92a73ec76aee0b, 5.129dcfdf6c598301b278f0b3490eb2bf4f600524e2, fd08d4dbbec07a44f01b0ddb041912be0dc88f8c, 2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8, 9a467bd1e6811011026ad4c8de701b940d88a00c, 9e1aba34df9a87d53460888e05718717c0f69343, c8addb842ae8dcf69c15fc976e33e3bd538a41d7, 2dd6cd823777bea6d9a880a12a92a73ec76aee0b

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