SB2025050440 - NULL pointer dereference in Linux kernel tty serial driver
Published: May 4, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050440
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) NULL pointer dereference (CVE-ID: CVE-2023-53094)
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.
Remediation
Install update from vendor's website.
References
- 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