CVE-2025-21838

usb: gadget: core: flush gadget workqueue after device removal

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.

N/A

CVSS

Severity:

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266
https://git.kernel.org/stable/c/859cb45aefa6de823b2fa7f229fe6d9562c9f3b7
https://git.kernel.org/stable/c/f894448f3904d7ad66fecef8f01fe0172629e091
https://git.kernel.org/stable/c/97695b5a1b5467a4f91194db12160f56da445dfe
https://git.kernel.org/stable/c/399a45e5237ca14037120b1b895bd38a3b4492ea

Frequently Asked Questions

What is the severity of CVE-2025-21838?: CVE-2025-21838 has not yet been assigned a CVSS score.
How to fix CVE-2025-21838?: To fix CVE-2025-21838, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21838 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-21838 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21838?: CVE-2025-21838 affects Linux Linux, Linux Linux.

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