CVE Database›Document archive›CVE-2026-74718

CVE-2026-74718

kernel: devlink: fix net namespace reference leak in reload

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 22, 2026

Updated · October 29, 2026

Description

A flaw was found in the devlink component of the Linux kernel. When the devlink_nl_reload_doit() function is called, it may fail to release a network namespace reference under specific error conditions. This oversight occurs when the requested network namespace differs from the current one and the reload action is not DRIVER_REINIT. A local attacker could exploit this reference leak to cause resource exhaustion, leading to a Denial of Service (DoS).

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-911 · Improper Update of Reference Count