CVE-2026-64376

kernel: firmware_loader: fix device reference leak in firmware_upload_register()

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 25, 2026

Updated · September 9, 2026

Description

A flaw was found in the Linux kernel's firmware loader component. This vulnerability occurs in the firmware_upload_register() function when an allocation failure happens after a device instance is created. The system fails to properly release a device reference, leading to an unbalanced reference count. This can result in a resource leak within the kernel.

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