CVE-2026-93080

kernel: firmware: arm_scmi: Fix transport device teardown lookup

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel's ARM System Control and Management Interface (SCMI) firmware. This vulnerability occurs because the scmi_device_destroy() function, responsible for tearing down SCMI transport devices, uses an incorrect lookup mechanism. Malformed firmware with duplicate protocol child nodes could exploit this to reuse an existing transport device and then prematurely destroy it. This could lead to system instability or a denial of service.

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-1341 · Multiple Releases of Same Resource or Handle