CVE-2021-39640

HIGH

Android - Local Privilege Escalation via Improper Locking in __dwc3_gadget_ep0_queue

Title source: llm
STIX 2.1

Description

In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://source.android.com/security/bulletin/pixel/2021-12-01

Scores

CVSS v3 7.8
EPSS 0.0010
EPSS Percentile 1.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-667
Status published
Products (1)
google/android
Published Dec 15, 2021
Tracked Since Feb 18, 2026