---
id: CVE-2026-97508
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  thunderbolt: Set tb->root_switch to NULL when domain is stopped

  Similarly what we do with the firmware connection manager
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  thunderbolt: Set tb->root_switch to NULL when domain is stopped

  Similarly what we do with the firmware connection manager. This makes
  tb_xdp_handle_request() return er…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    d9a638e7bc87e0e6fe3a75517ac481e72fc0058c
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    66b0fe27e277713c2b9f3c452c76330ed0bd7eaf
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    54ad3415cc211ca0d64ae1bf3234d6eb5c6aedd0
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    83d1af5b1b6e6c96ffa633ca2c9a77f6f4c93efa
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    f06e9fbae78a51832211b4495a19412c7d49ecb4
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    99f019d2e9eb79adc485fef8aa8ada2cd0c843e9
  - >-
    Linux >= d1ff70241a275133e1a0258b7c23588b122276c8 <
    e56249d8a68e712f3b60e1f3fdbb5b4fea146468
  - Linux 4.15
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:18:00.283'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97508'
references:
  - url: 'https://git.kernel.org/stable/c/54ad3415cc211ca0d64ae1bf3234d6eb5c6aedd0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/66b0fe27e277713c2b9f3c452c76330ed0bd7eaf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/83d1af5b1b6e6c96ffa633ca2c9a77f6f4c93efa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/99f019d2e9eb79adc485fef8aa8ada2cd0c843e9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d9a638e7bc87e0e6fe3a75517ac481e72fc0058c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e56249d8a68e712f3b60e1f3fdbb5b4fea146468'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f06e9fbae78a51832211b4495a19412c7d49ecb4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97508.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97508'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540545'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97508'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97508'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97508.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00225
epssPercentile: 0.1306
ingestedAt: '2026-09-24T16:47:15.861Z'
cwe:
  - CWE-825
scores:
  nvd: 7.5
  vendor: 5.5
---

## Overview

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

thunderbolt: Set tb->root_switch to NULL when domain is stopped

Similarly what we do with the firmware connection manager. This makes
tb_xdp_handle_request() return error to the remote host. However, we
need to make sure we keep the uuid alive so that we can reply until the
whole domain is released.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97508.json)