CVE-2025-21838
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.
How to fix
- linux linux_kernel6.1.130, 6.6.80, 6.12.16, 6.13.4 or later
- git.kernel.org/stable/c/399a45e5237ca14037120b1b895bd38a3b4492ea
- git.kernel.org/stable/c/859cb45aefa6de823b2fa7f229fe6d9562c9f3b7
- git.kernel.org/stable/c/97695b5a1b5467a4f91194db12160f56da445dfe
- git.kernel.org/stable/c/e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266
- git.kernel.org/stable/c/f894448f3904d7ad66fecef8f01fe0172629e091
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.12 ≤ v < 6.1.130, 6.2 ≤ v < 6.6.80, 6.7 ≤ v < 6.12.16, 6.13 ≤ v < 6.13.4, 6.14 | 6.1.130, 6.6.80, 6.12.16, 6.13.4 |
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