Vulnerability in Linux

CVE-2023-54139

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.

EPSS: 0.002 (7.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions 7f5a08c79df35e68f1a43033450c5050f12bc155, 5.18, 0

References

Frequently asked questions

What is CVE-2023-54139?
CVE-2023-54139 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-12-24.
How severe is CVE-2023-54139?
High severity. CVSS v3 base score is 7.8 out of 10.