---
id: CVE-2026-98696
title: 'USB: serial: fix driver deregistration order'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  USB: serial: fix driver deregistration order

  USB serial driver modules register one driver for the USB bus and one or
  more drivers for the ports on the USB serial bus.…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 <
    9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe
  - >-
    Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 <
    a1aa474768f69ea3a70da523f00f74c264cfa10e
  - >-
    Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 <
    428d479a0d31460fbf5969ab262ccd673f1fac01
  - >-
    Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 <
    646e5b28b4fdbc1b828a2398d6ced2c1dd308a46
  - Linux 3.4
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:46:20.399Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98696'
references:
  - url: 'https://git.kernel.org/stable/c/9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe'
  - url: 'https://git.kernel.org/stable/c/a1aa474768f69ea3a70da523f00f74c264cfa10e'
  - url: 'https://git.kernel.org/stable/c/428d479a0d31460fbf5969ab262ccd673f1fac01'
  - url: 'https://git.kernel.org/stable/c/646e5b28b4fdbc1b828a2398d6ced2c1dd308a46'
tags:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.517Z'
---

## Overview

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

USB: serial: fix driver deregistration order

USB serial driver modules register one driver for the USB bus and one or
more drivers for the ports on the USB serial bus.

When unloading a driver module, the USB driver must be deregistered
before the USB serial bus drivers so that I/O is stopped before
unbinding the ports to avoid use-after-free in completion handlers
accessing port data.

Note that the "new_id" attributes must first be removed to prevent new
ids from being added and triggering a probe of the USB driver after it
has been deregistered.

## Affected

- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe`
- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < a1aa474768f69ea3a70da523f00f74c264cfa10e`
- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 428d479a0d31460fbf5969ab262ccd673f1fac01`
- `Linux >= 765e0ba62613fb90f09c1b5926750df0aa56f349 < 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46`
- `Linux 3.4`

## Remediation

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