CVE Database›Document archive›CVE-2026-99142

CVE-2026-99142

kernel: kernel: Denial of Service via out-of-bounds write in tracing subsystem

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · October 28, 2026

Updated · November 1, 2026

Description

A flaw was found in the Linux kernel's tracing subsystem. In the event filter parser, insufficient boundary checks allow the operator stack to be written past its allocated limit. A local attacker could exploit this vulnerability by submitting a specially crafted trace filter expression, triggering an out-of-bounds write. This issue primarily results in a system crash, causing a Denial of Service (DoS), or potential kernel memory corruption.

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 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write