NULL pointer dereference in Linux kernel - CVE-2023-53094
Published: May 4, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108457
CSH Severity: Low
CVSS v4.0: 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-2023-53094
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the lpuart_dma_rx_free(), lpuart32_startup(), lpuart_set_termios(), lpuart32_set_termios() and lpuart_suspend() functions in drivers/tty/serial/fsl_lpuart.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2023-53094
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/19a98d56dfedafb25652bdb9cd48a4e73ceba702
- https://git.kernel.org/stable/c/1be6f2b15f902c02e055ae0b419ca789200473c9
- https://git.kernel.org/stable/c/2a36b444cace9580380467fd1183bb5e85bcc80a
- https://git.kernel.org/stable/c/90530e7214c8a04dcdde57502d93fa96af288c38
- https://git.kernel.org/stable/c/954fc9931f0aabf272b5674cf468affdd88d3a36
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.23