CVE-2023-54139

Linux Kernel 5.18-6.3.2 - Out-of-Bounds Write via Negative Write Index in User Events Tracing

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/user_events: Ensure write index cannot be negative The write index indicates which event the data is for and accesses a per-file array. The index is passed by user processes during write() calls as the first 4 bytes. Ensure that it cannot be negative by returning -EINVAL to prevent out of bounds accesses. Update ftrace self-test to ensure this occurs properly.

References (4)

Core 4

Scores

EPSS 0.0017
EPSS Percentile 7.2%

Details

Status published
Products (13)
linux/Kernel 5.18.0 - 6.1.28linux
linux/Kernel 6.2.0 - 6.2.15linux
linux/Kernel 6.3.0 - 6.3.2linux
Linux/Linux < 5.18
Linux/Linux 5.18
Linux/Linux 6.1.28 - 6.1.*
Linux/Linux 6.2.15 - 6.2.*
Linux/Linux 6.3.2 - 6.3.*
Linux/Linux 6.4
Linux/Linux 7f5a08c79df35e68f1a43033450c5050f12bc155 - 0489c2b2c3104b89f078dbcec8c744dfc157d3e9
... and 3 more
Published Dec 24, 2025
Tracked Since Feb 18, 2026