CVE-2026-23436

kernel: net: shaper: protect from late creation of hierarchy

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · April 3, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's network shaper module. A race condition can occur when a network device (netdev) is unregistered while its hierarchy is being created. This timing issue may allow the system to allocate resources that are not properly released, leading to a memory leak.

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-367 · Time-of-check Time-of-use (TOCTOU) Race Condition