CVE-2026-46292

kernel: pmdomain: core: Fix detach procedure for virtual devices in genpd

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · June 8, 2026

Updated · July 9, 2026

Description

A flaw was found in the Linux kernel's generic power domain (genpd) component. When a virtual device is detached from a power management (PM) domain, the pm_runtime_disable() function is not called, leaving runtime PM enabled for the detached device. This oversight can lead to critical errors, including a null pointer dereference, potentially causing a Denial of Service (DoS) condition. Additionally, it may result in the system retaining unnecessary performance state votes for the device.

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-772 · Missing Release of Resource after Effective Lifetime