Improper locking in Linux kernel - CVE-2021-46941
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91545
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-46941
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the dwc3_set_prtcap(), __dwc3_set_mode() and dwc3_probe() functions in drivers/usb/dwc3/core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/fce7bbcd07d59ac30dba8ce225316b3b4c1c7b50
- https://git.kernel.org/stable/c/800f58217626c8b147aa40660e572ed8a0d56e3b
- https://git.kernel.org/stable/c/1c10fd60c8595ea7ff7e29d3cf1fa88069941da3
- https://git.kernel.org/stable/c/f88359e1588b85cf0e8209ab7d6620085f3441d9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13