CVE-2025-21838

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/399a45e5237ca14037120b1b895bd38a3b4492ea	Patch
https://git.kernel.org/stable/c/859cb45aefa6de823b2fa7f229fe6d9562c9f3b7	Patch
https://git.kernel.org/stable/c/97695b5a1b5467a4f91194db12160f56da445dfe	Patch
https://git.kernel.org/stable/c/e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266	Patch
https://git.kernel.org/stable/c/f894448f3904d7ad66fecef8f01fe0172629e091	Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::

History

15 Oct 2026, 02:17

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-784472.html -

Information

Published : 2025-03-07 09:15

Updated : 2026-11-05 21:17

NVD link : CVE-2025-21838

Mitre link : CVE-2025-21838

CVE.ORG link : CVE-2025-21838

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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This is observed, for example, with the dwc3 driver with the\nfollowing call stack:\n device_del()\n gadget_unbind_driver()\n usb_gadget_disconnect_locked()\n dwc3_gadget_pullup()\n\t dwc3_gadget_soft_disconnect()\n\t usb_gadget_set_state()\n\t schedule_work(&gadget->work)\n\nMove flush_work() after device_del() to ensure the workqueue is cleaned\nup."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: gadget: core: vaciar la cola de trabajo de gadget despu\u00e9s de la eliminaci\u00f3n del dispositivo device_del() puede provocar que se programe un nuevo trabajo en la cola de trabajo gadget->work. Esto se observa, por ejemplo, con el controlador dwc3 con la siguiente pila de llamadas: device_del() gadget_unbind_driver() usb_gadget_disconnect_locked() dwc3_gadget_pullup() dwc3_gadget_soft_disconnect() usb_gadget_set_state() schedule_work(&gadget->work) Mueva flush_work() despu\u00e9s de device_del() para garantizar que se limpie la cola de trabajo."}], "lastModified": "2026-11-05T21:17:43.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0AFB5013-DBA5-463D-BE10-D302AFF1D2C7", "versionEndExcluding": "6.1.130", "versionStartIncluding": "3.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A93F3655-6FAF-43B0-8541-A212998F05B8", "versionEndExcluding": "6.6.80", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13C8DB18-FC60-425F-84E5-3EDDEC61B2FC", "versionEndExcluding": "6.12.16", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2A2093ED-74A9-43F9-AC72-50030F374EA4", "versionEndExcluding": "6.13.4", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}