SB20251208109 - Improper error handling in Linux kernel tty serial driver
Published: December 8, 2025 Updated: December 12, 2025
Security Bulletin ID
SB20251208109
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 error handling (CVE-ID: CVE-2022-50625)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the pl011_dma_rx_callback() function in drivers/tty/serial/amba-pl011.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/1c5f0d3f480abd8c26761b6b1f486822e77faea3
- https://git.kernel.org/stable/c/38a10fdd54d17590d45cb1c43b9889da383b6b1a
- https://git.kernel.org/stable/c/64bc5dbc3260230e2f022288c71e5c680059384a
- https://git.kernel.org/stable/c/78d837ce20517e0c1ff3ebe08ad64636e02c2e48
- https://git.kernel.org/stable/c/94cdb9f33698478b0e7062586633c42c6158a786
- https://git.kernel.org/stable/c/965f07ea5fd1b9591bcccc825a93ad883e56222c
- https://git.kernel.org/stable/c/a4ea20ab82aa2b197dc7b08f51e1d615578276a0
- https://git.kernel.org/stable/c/d5b16eb076f46c88d02d41ece5bec4e0d89158bb
- https://git.kernel.org/stable/c/d71a611fca1984c0765f9317ff471ac8cd0e3e2f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86