SB20251230290 - Improper Initialization in Linux kernel serial 8250 driver
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230290
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Initialization (CVE-ID: CVE-2023-54220)
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 website.
References
- 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