---
id: CVE-2026-90029
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: storage: realtek_cr: fix use-after-free on disconnect

  realtek_cr_destructor() calls timer_delete() before the chip containing
  the timer is freed
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: storage: realtek_cr: fix use-after-free on disconnect

  realtek_cr_destructor() calls timer_delete() before the chip containing
  the timer is freed. The timer callba…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e931830bb877e2aad9a1be83506f9bdb26c91e4e <
    7c4e2f964c65dea4ea22386799d5fb10ef1e3e54
  - >-
    Linux >= e931830bb877e2aad9a1be83506f9bdb26c91e4e <
    cae9dbba6adae21a04a3bd045e07b489847ff2c6
  - >-
    Linux >= e931830bb877e2aad9a1be83506f9bdb26c91e4e <
    4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc
  - Linux 3.1
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T11:17:15.953'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90029'
references:
  - url: 'https://git.kernel.org/stable/c/4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7c4e2f964c65dea4ea22386799d5fb10ef1e3e54'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cae9dbba6adae21a04a3bd045e07b489847ff2c6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.933Z'
epss: 0.00206
epssPercentile: 0.0948
---

## Overview

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

usb: storage: realtek_cr: fix use-after-free on disconnect

realtek_cr_destructor() calls timer_delete() before the chip containing
the timer is freed. The timer callback may still be running and can
rearm itself, resulting in a use-after-free.

Use timer_shutdown_sync() to wait for the callback and prevent further
rearming. Do this unconditionally because ss_en may be changed after
the timer is armed.

Move timer_setup() into init_realtek_cr() so the timer is initialized
before any failure path can invoke the destructor.

Found by static analysis.

## Remediation

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