CyberRota Analysis
AI-GeneratedA vulnerability exists in the Linux kernel related to the bq256xx power supply driver, where improper handling of USB work can lead to dereferencing a freed charger object. This flaw could potentially result in system instability or crashes if the queued USB work executes after the charger has been released. Linux system administrators and developers working with power management features should prioritize addressing this issue to ensure system reliability and prevent potential exploitation.
Original NVD 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.