---
id: CVE-2025-68753
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: firewire-motu: add bounds check in put_user loop for DSP events

  In the DSP event handling code, a put_user() loop copies event data.
  When the user buffer size is…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: firewire-motu: add bounds check in put_user loop for DSP events

  In the DSP event handling code, a put_user() loop copies event data.
  When the user buffer size is…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
published: '2026-01-05'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:10:00.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68753'
references:
  - url: 'https://git.kernel.org/stable/c/0d71b3c2ed742f1ccb3b0b7a61afb90c0251093f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/298e753880b6ea99ac30df34959a7a03b0878eed'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6d4f17782ce4facf3197e79707df411ee3d7b30a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8f9e51cf2a2a43d0cd72d3dc0b5ccea3f639c187'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/df692cf2b601a54b34edfdb9e683d67483aa8ce1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ea2c921d9de6e32ca50cb817b9d57bb881be70de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00141
epssPercentile: 0.03045
ingestedAt: '2026-10-14T19:49:57.550Z'
---

## Overview

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

ALSA: firewire-motu: add bounds check in put_user loop for DSP events

In the DSP event handling code, a put_user() loop copies event data.
When the user buffer size is not aligned to 4 bytes, it could overwrite
beyond the buffer boundary.

Fix by adding a bounds check before put_user().

## Remediation

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