---
id: CVE-2026-90030
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: dwc3: clear forceRM when issuing EndTransfer

  The forceRM bit of the DEPCMD register controls the behavior of the
  EndTransfer command used to stop an active transf…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: dwc3: clear forceRM when issuing EndTransfer

  The forceRM bit of the DEPCMD register controls the behavior of the
  EndTransfer command used to stop an active transf…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1e43c86d84fb0503e82a143e017f35421498fc1a <
    0afe5c31612de3d18cc6d16e616da4a48ba1e5a2
  - >-
    Linux >= 1e43c86d84fb0503e82a143e017f35421498fc1a <
    e01408ee52fe5cb2d0b43f47f359336af2b6c316
  - >-
    Linux >= 1e43c86d84fb0503e82a143e017f35421498fc1a <
    b58e6200450d350314db0ecda7d6d1bde3281e80
  - Linux ab99c4be945724b032cc55e05c6738fe1d84bf70
  - Linux >= 6.6.37 < 6.7
  - Linux 6.9
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:18:26.160'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90030'
references:
  - url: 'https://git.kernel.org/stable/c/0afe5c31612de3d18cc6d16e616da4a48ba1e5a2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b58e6200450d350314db0ecda7d6d1bde3281e80'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e01408ee52fe5cb2d0b43f47f359336af2b6c316'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.932Z'
epss: 0.00173
epssPercentile: 0.05982
---

## Overview

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

usb: dwc3: clear forceRM when issuing EndTransfer

The forceRM bit of the DEPCMD register controls the behavior of the
EndTransfer command used to stop an active transfer. Older DWC3
programming guide revisions recommended setting forceRM=1 when
issuing EndTransfer. Newer programming guide revisions recommend
issuing EndTransfer with forceRM cleared.

With forceRM=1 on DWC_usb31 v2.00a and v2.10a controllers, a transfer
aborted through the ep_dequeue path was observed to remain active
after EndTransfer completion. A subsequent StartTransfer issued on the
same endpoint triggered writes associated with the aborted transfer.
This resulted in an SMMU fault because the transfer buffer had already
been unmapped during EndTransfer command-completion cleanup.

Using forceRM=0 eliminates the issue. Although older DWC3 programming
guide revisions recommended setting forceRM=1, no issues are known
from using forceRM=0. Clear forceRM when issuing EndTransfer to provide
consistent EndTransfer behavior and align with newer programming guide
recommendations.

## Remediation

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