---
id: CVE-2026-64334
title: 'USB: serial: digi_acceleport: fix hard lockup on disconnect'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  USB: serial: digi_acceleport: fix hard lockup on disconnect

  If submitting the OOB write urb fails persistently (e.g if the device is
  being disconnected) the driver wou…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    6e51147c2744d15730084dc89cc99180d3de4184
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    6a8592ace932081ea11aea41c460a1ca0f6344a4
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    5a82d842e8c35227d7227f19e5e654df1451782c
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    bcfeae431db9986c2b313e6a760f2ac8df61e138
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    2067b3838da6e4af03bae3630414193188d754b2
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    2b7dc482f859f2d027db07ff0efc1c5df5b3451a
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    79bc131df0e50f8f663c1fdbbe952aaf193a8d39
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    5c1ea24b53bf3bfb859f0a05573997487975da23
  - Linux 2.6.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:35:30.520665Z'
published: '2026-07-25'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:44:46.348Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64334'
references:
  - url: 'https://git.kernel.org/stable/c/6e51147c2744d15730084dc89cc99180d3de4184'
  - url: 'https://git.kernel.org/stable/c/6a8592ace932081ea11aea41c460a1ca0f6344a4'
  - url: 'https://git.kernel.org/stable/c/5a82d842e8c35227d7227f19e5e654df1451782c'
  - url: 'https://git.kernel.org/stable/c/bcfeae431db9986c2b313e6a760f2ac8df61e138'
  - url: 'https://git.kernel.org/stable/c/2067b3838da6e4af03bae3630414193188d754b2'
  - url: 'https://git.kernel.org/stable/c/2b7dc482f859f2d027db07ff0efc1c5df5b3451a'
  - url: 'https://git.kernel.org/stable/c/79bc131df0e50f8f663c1fdbbe952aaf193a8d39'
  - url: 'https://git.kernel.org/stable/c/5c1ea24b53bf3bfb859f0a05573997487975da23'
tags:
  - cve.org
epss: 0.00095
epssPercentile: 0.00601
ingestedAt: '2026-11-06T16:57:43.198Z'
---

## Overview

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

USB: serial: digi_acceleport: fix hard lockup on disconnect

If submitting the OOB write urb fails persistently (e.g if the device is
being disconnected) the driver would loop indefinitely with interrupts
disabled.

Check for urb submission errors when sending OOB commands to avoid
hanging if, for example, open(), set_termios() or close() races with a
physical disconnect.

This is issue was flagged by Sashiko when reviewing an unrelated change
to the driver.

## Affected

- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6e51147c2744d15730084dc89cc99180d3de4184`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6a8592ace932081ea11aea41c460a1ca0f6344a4`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5a82d842e8c35227d7227f19e5e654df1451782c`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bcfeae431db9986c2b313e6a760f2ac8df61e138`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2067b3838da6e4af03bae3630414193188d754b2`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2b7dc482f859f2d027db07ff0efc1c5df5b3451a`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 79bc131df0e50f8f663c1fdbbe952aaf193a8d39`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5c1ea24b53bf3bfb859f0a05573997487975da23`
- `Linux 2.6.12`

## Remediation

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