CVE-2022-20567

kernel: race in pppol2tp_release

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Severity

Moderate

Red Hat Product Security

6.4

CVSS 3.1

Review impact separately from score.

Published · February 26, 2018

Updated · November 21, 2025

Description

A use-after-free flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP) when user closes a socket. This could allow a local user to crash the system or potentially escalate their privileges on the system.

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 · 6.4
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')