CVE-2025-39813
kernel: Linux kernel: Denial of Service in ftrace due to race condition in trace_printk_seq
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 16, 2025
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel's ftrace subsystem. A local user could trigger a race condition when concurrently performing a trace dump and reading the trace pipe. This could lead to a system warning and potentially result in a Denial of Service (DoS), making the system unavailable.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-366 · Race Condition within a Thread