CVE Database›Document archive›CVE-2026-99140

CVE-2026-99140

kernel: kernel: Denial of Service via race condition in tracing subsystem

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Severity

Low

Red Hat Product Security

1.9

CVSS 3.1

Review impact separately from score.

Published · October 28, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's tracing subsystem. A local user with access to the tracing interface can cause a Denial of Service (DoS) due to a race condition when attaching histogram triggers to filtered events. Under specific timing conditions, buffered trace events are processed without expected reservation tracking, triggering an internal kernel warning that can halt the system if configured to panic on warnings, as well as produce inaccurate timestamps.

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 · 1.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

CWE-366 · Race Condition within a Thread