CVE-2025-21838

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2025-03-07 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Affected Software (9)

VendorProductVersion
Linux Linux 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 < e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266
Linux Linux 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 < 859cb45aefa6de823b2fa7f229fe6d9562c9f3b7
Linux Linux 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 < f894448f3904d7ad66fecef8f01fe0172629e091
Linux Linux 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 < 97695b5a1b5467a4f91194db12160f56da445dfe
Linux Linux 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 < 399a45e5237ca14037120b1b895bd38a3b4492ea
Linux Linux 3.12
linux linux_kernel 3.12 – 6.1.130
linux linux_kernel 6.14
linux linux_kernel 6.14

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.21%
Raw Score 0.002080
Percentile 11.0%
Date 2026-11-06

EPSS Trend

2026-11-06
0.00208
2026-11-05
0.00208

Intelligence Sources

mitre ref →
nvd ref →