---
id: CVE-2026-64335
title: 'USB: serial: digi_acceleport: fix broken rx after throttle'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  USB: serial: digi_acceleport: fix broken rx after throttle

  If the port is closed while throttled, the read urb is never resubmitted
  and the port will not receive any f…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4f3f6f44db71e469933a7c36c5d57d937ba0a21b
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    d5d2660caef78d4c996d34d123574c8e86f5b5ac
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    61954033326fc7e637ed2aeeb4b52021e0ee4657
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    8d50a910194f66566a5eb252b33283855c8d5203
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    abacd67e6f689c62d8a13e3da25f4272bc9ad4af
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    eab394781e9321c0c7e97a24fd092387cb262f40
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    92fa3e1a49848509ea3f7995751963fc65095998
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    83a3dfc018943b05b6daf3a6f891833e1aabfa1f
  - Linux 2.6.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:35:35.007643Z'
published: '2026-07-25'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:44:46.513Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64335'
references:
  - url: 'https://git.kernel.org/stable/c/4f3f6f44db71e469933a7c36c5d57d937ba0a21b'
  - url: 'https://git.kernel.org/stable/c/d5d2660caef78d4c996d34d123574c8e86f5b5ac'
  - url: 'https://git.kernel.org/stable/c/61954033326fc7e637ed2aeeb4b52021e0ee4657'
  - url: 'https://git.kernel.org/stable/c/8d50a910194f66566a5eb252b33283855c8d5203'
  - url: 'https://git.kernel.org/stable/c/abacd67e6f689c62d8a13e3da25f4272bc9ad4af'
  - url: 'https://git.kernel.org/stable/c/eab394781e9321c0c7e97a24fd092387cb262f40'
  - url: 'https://git.kernel.org/stable/c/92fa3e1a49848509ea3f7995751963fc65095998'
  - url: 'https://git.kernel.org/stable/c/83a3dfc018943b05b6daf3a6f891833e1aabfa1f'
tags:
  - cve.org
epss: 0.00123
epssPercentile: 0.02056
ingestedAt: '2026-11-06T16:57:43.197Z'
---

## Overview

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

USB: serial: digi_acceleport: fix broken rx after throttle

If the port is closed while throttled, the read urb is never resubmitted
and the port will not receive any further data until the device is
reconnected (or the driver is rebound).

Clear the throttle flags and submit the urb if needed when opening the
port.

## Affected

- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4f3f6f44db71e469933a7c36c5d57d937ba0a21b`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d5d2660caef78d4c996d34d123574c8e86f5b5ac`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 61954033326fc7e637ed2aeeb4b52021e0ee4657`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8d50a910194f66566a5eb252b33283855c8d5203`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < abacd67e6f689c62d8a13e3da25f4272bc9ad4af`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eab394781e9321c0c7e97a24fd092387cb262f40`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 92fa3e1a49848509ea3f7995751963fc65095998`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 83a3dfc018943b05b6daf3a6f891833e1aabfa1f`
- `Linux 2.6.12`

## Remediation

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