---
id: CVE-2026-93089
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  firmware: arm_scmi: Free transport channel on IDR failure

  If transport channel setup succeeds but the following IDR insertion fails,
  the error path destroys the transp…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  firmware: arm_scmi: Free transport channel on IDR failure

  If transport channel setup succeeds but the following IDR insertion fails,
  the error path destroys the transp…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <
    ae7980c9af698d0a7e6790d49249abc71f0fc304
  - >-
    Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <
    de0a4c103740cf54cf77370d47e03c9aa51aa5ee
  - >-
    Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <
    d7c60c0fe2bd452b56fe07947842d64da61b7290
  - >-
    Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <
    fbaebd380caa4e1cec9306ca00231da6518a123f
  - >-
    Linux >= 05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <
    d72e7e5f24687c0490aabf317653caffe0447aeb
  - Linux 6.3
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:18:02.840'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93089'
references:
  - url: 'https://git.kernel.org/stable/c/ae7980c9af698d0a7e6790d49249abc71f0fc304'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d72e7e5f24687c0490aabf317653caffe0447aeb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d7c60c0fe2bd452b56fe07947842d64da61b7290'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/de0a4c103740cf54cf77370d47e03c9aa51aa5ee'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fbaebd380caa4e1cec9306ca00231da6518a123f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93089.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93089'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536156'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93089'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93089'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93089.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-17T16:21:47.760Z'
epss: 0.00209
epssPercentile: 0.10945
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-772
---

## Overview

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

firmware: arm_scmi: Free transport channel on IDR failure

If transport channel setup succeeds but the following IDR insertion fails,
the error path destroys the transport device and frees the channel info
without invoking the transport cleanup callback.

Call chan_free() before destroying the device so transport specific
resources such as IRQs, mailbox channels and mapped shared memory are
released consistently with the normal teardown path.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93089.json)