vulnerability
Red Hat: CVE-2025-21838: kernel: usb: gadget: core: flush gadget workqueue after device removal
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:M/C:C/I:N/A:C) | Mar 7, 2025 | Jul 9, 2025 | Jul 10, 2025 |
Severity
6
CVSS
(AV:L/AC:L/Au:M/C:C/I:N/A:C)
Published
Mar 7, 2025
Added
Jul 9, 2025
Modified
Jul 10, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: core: flush gadget workqueue after device removal
device_del() can lead to new work being scheduled in gadget->work
workqueue. This is observed, for example, with the dwc3 driver with the
following call stack:
device_del()
gadget_unbind_driver()
usb_gadget_disconnect_locked()
dwc3_gadget_pullup()
dwc3_gadget_soft_disconnect()
usb_gadget_set_state()
schedule_work(&gadget->work)
Move flush_work() after device_del() to ensure the workqueue is cleaned
up.
Solution
no-fix-redhat-rpm-package
References
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