#VU120845 Improper Initialization in Linux kernel - CVE-2023-54220
Published: December 30, 2025 / Updated: December 30, 2025
Vulnerability identifier: #VU120845
Vulnerability risk: 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-2023-54220
CWE-ID: CWE-665
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 initialization within the serial8250_init_port() function in drivers/tty/serial/8250/8250_port.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c
- https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b
- https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816
- https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573
- https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6
- https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b
- https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae
- https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.324
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.293
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.192
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.128
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.255
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.47
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5