SB2025123077 - Memory leak in Linux kernel serial 8250 driver
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025123077
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) Memory leak (CVE-ID: CVE-2023-54301)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the brcmuart_probe() function in drivers/tty/serial/8250/8250_bcm7271.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/2a3e5f428fc4315be6144524912eaefac16f43a9
- https://git.kernel.org/stable/c/5258395e67fee6929fb8e50c8239f8de51b8cb2d
- https://git.kernel.org/stable/c/56a81445b8e4b8906d557518c5dae3ddbb447d1e
- https://git.kernel.org/stable/c/f264f2f6f4788dc031cef60a0cf2881902736709
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.113
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.30
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4