---
id: CVE-2025-39801
title: 'usb: dwc3: Remove WARN_ON for device endpoint command timeouts'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: dwc3: Remove WARN_ON for device endpoint command timeouts

  This commit addresses a rarely observed endpoint command timeout
  which causes kernel panic due to warn w…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 <
    dfe40159eec6ca63b40133bfa783eee2e3ed829f
  - >-
    Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 <
    5a1a847d841505dba2bd85602daf5c218e1d85b8
  - >-
    Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 <
    84c95dbf5bece56086cdb65a64162af35158bdd9
  - >-
    Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 <
    f49697dfba2915a9ff36f94604eb76fa61413929
  - >-
    Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 <
    db27482b9db340402e05d4e9b75352bbaca51af2
  - >-
    Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 <
    45eae113dccaf8e502090ecf5b3d9e9b805add6f
  - Linux 3.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:11:47.846641Z'
published: '2025-09-15'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:12:58.732Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-39801'
references:
  - url: 'https://git.kernel.org/stable/c/dfe40159eec6ca63b40133bfa783eee2e3ed829f'
  - url: 'https://git.kernel.org/stable/c/5a1a847d841505dba2bd85602daf5c218e1d85b8'
  - url: 'https://git.kernel.org/stable/c/84c95dbf5bece56086cdb65a64162af35158bdd9'
  - url: 'https://git.kernel.org/stable/c/f49697dfba2915a9ff36f94604eb76fa61413929'
  - url: 'https://git.kernel.org/stable/c/db27482b9db340402e05d4e9b75352bbaca51af2'
  - url: 'https://git.kernel.org/stable/c/45eae113dccaf8e502090ecf5b3d9e9b805add6f'
tags:
  - cve.org
epss: 0.00153
epssPercentile: 0.0447
ingestedAt: '2026-11-05T22:38:32.029Z'
---

## Overview

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

usb: dwc3: Remove WARN_ON for device endpoint command timeouts

This commit addresses a rarely observed endpoint command timeout
which causes kernel panic due to warn when 'panic_on_warn' is enabled
and unnecessary call trace prints when 'panic_on_warn' is disabled.
It is seen during fast software-controlled connect/disconnect testcases.
The following is one such endpoint command timeout that we observed:

1. Connect
   =======
->dwc3_thread_interrupt
 ->dwc3_ep0_interrupt
  ->configfs_composite_setup
   ->composite_setup
    ->usb_ep_queue
     ->dwc3_gadget_ep0_queue
      ->__dwc3_gadget_ep0_queue
       ->__dwc3_ep0_do_control_data
        ->dwc3_send_gadget_ep_cmd

2. Disconnect
   ==========
->dwc3_thread_interrupt
 ->dwc3_gadget_disconnect_interrupt
  ->dwc3_ep0_reset_state
   ->dwc3_ep0_end_control_data
    ->dwc3_send_gadget_ep_cmd

In the issue scenario, in Exynos platforms, we observed that control
transfers for the previous connect have not yet been completed and end
transfer command sent as a part of the disconnect sequence and
processing of USB_ENDPOINT_HALT feature request from the host timeout.
This maybe an expected scenario since the controller is processing EP
commands sent as a part of the previous connect. It maybe better to
remove WARN_ON in all places where device endpoint commands are sent to
avoid unnecessary kernel panic due to warn.

## Affected

- `Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 < dfe40159eec6ca63b40133bfa783eee2e3ed829f`
- `Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 < 5a1a847d841505dba2bd85602daf5c218e1d85b8`
- `Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 < 84c95dbf5bece56086cdb65a64162af35158bdd9`
- `Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 < f49697dfba2915a9ff36f94604eb76fa61413929`
- `Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 < db27482b9db340402e05d4e9b75352bbaca51af2`
- `Linux >= 72246da40f3719af3bfd104a2365b32537c27d83 < 45eae113dccaf8e502090ecf5b3d9e9b805add6f`
- `Linux 3.2`

## Remediation

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