CVE-2026-68341

kernel: ovpn: fix use after free in unlock_ovpn()

Loading…

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 ovpn module. When the unlock_ovpn() function processes a list of objects, it may attempt to access memory that has already been freed. This use-after-free vulnerability could potentially lead to system instability or, in more severe cases, arbitrary code execution.

Statement

This issue affects OpenVPN kernel (ovpn). unlock_ovpn() UAF when ovpn_peer_put() frees peer during llist iteration. Systems not using ovpn 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