CVE-2026-68283

kernel: tracing: Fix use-after-free freeing trigger private data

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 10, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's tracing subsystem. A synchronization issue during the freeing of trigger private data allows a concurrent tracepoint handler to access memory after it has been released. This use-after-free vulnerability could lead to memory corruption.

Statement

This issue affects kernel tracing event triggers. Bulk GC kthread can free trigger data while still in use. Systems not using trace triggers are not affected.

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-825 · Expired Pointer Dereference