---
id: CVE-2026-93080
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  firmware: arm_scmi: Fix transport device teardown lookup

  SCMI transport devices are deliberately excluded from normal SCMI bus
  matching so protocol drivers cannot bind…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  firmware: arm_scmi: Fix transport device teardown lookup

  SCMI transport devices are deliberately excluded from normal SCMI bus
  matching so protocol drivers cannot bind…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9593804c44c24545e1b0496786dcb765d7b0e193 <
    c656427440ea627166394d00c4b72147d5d79c60
  - >-
    Linux >= 9593804c44c24545e1b0496786dcb765d7b0e193 <
    4635953b4c1af477e166073521a77de6279f6929
  - >-
    Linux >= 9593804c44c24545e1b0496786dcb765d7b0e193 <
    a14dd8fe0a95db638c550ed984cfe2a7428c783d
  - Linux 6.16
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:18:01.950'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93080'
references:
  - url: 'https://git.kernel.org/stable/c/4635953b4c1af477e166073521a77de6279f6929'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a14dd8fe0a95db638c550ed984cfe2a7428c783d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c656427440ea627166394d00c4b72147d5d79c60'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.764Z'
epss: 0.00198
epssPercentile: 0.09861
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_scmi: Fix transport device teardown lookup

SCMI transport devices are deliberately excluded from normal SCMI bus
matching so protocol drivers cannot bind to the internal transport
children. However, scmi_device_destroy() uses the same protocol/name
lookup to find devices that must be unregistered during channel teardown.

Split the match helper so driver matching still skips transport devices,
while explicit child lookup can find them for teardown. Use a shared
transport-device name prefix macro for both matching and name generation.

Since transport-device names are derived from direction and protocol ID,
reject duplicate protocol channel setup before creating or finding a
transport device. This prevents malformed firmware with duplicate
protocol child nodes from reusing an existing transport device and then
destroying it when the duplicate IDR insertion fails.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.