Improper locking in Linux kernel - CVE-2021-47268
Published: June 13, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92017
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-2021-47268
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 tcpm_unregister_port() function in drivers/usb/typec/tcpm/tcpm.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/18eaf0de50eadeeb395b83310b259b21ad8ed0a6
- https://git.kernel.org/stable/c/d0a06696a8a4d99f649240b6f9b8a2e55452ecf5
- https://git.kernel.org/stable/c/3a13ff7ef4349d70d1d18378d661117dd5af8efe
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13