---
id: CVE-2026-46018
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES

  parse_uac2_sample_rate_range() caps the number of enumerated
  rates at MAX_NR_RATES, but it only breaks out of …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES

  parse_uac2_sample_rate_range() caps the number of enumerated
  rates at MAX_NR_RATES, but it only breaks out of …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.0.81, < 3.1'
  - 'linux_kernel >= 3.2.47, < 5.10.258'
  - 'linux_kernel >= 5.11, < 5.15.209'
  - 'linux_kernel >= 5.16, < 6.1.175'
  - 'linux_kernel >= 6.2, < 6.6.140'
  - 'linux_kernel >= 6.7, < 6.12.86'
  - 'linux_kernel >= 6.13, < 6.18.27'
  - 'linux_kernel >= 6.19, < 7.0.4'
patched:
  - linux_kernel 7.0.4
published: '2026-05-27'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:38.443'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46018'
references:
  - url: 'https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76ef'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5436bc1b07d4656f99412dc72871d250d7d55205'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a0b78639ef09b2e77974a3de3b1c07f6de3c5e56'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ab5ba9fd138758ddc50222264ff246b31e397abf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ba036305323814ec1f8655313b2fa6a0f7048716'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f14bd323eec4b4f0ef662520ec852e593ece1d4c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-784472.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00162
epssPercentile: 0.05009
ingestedAt: '2026-10-15T03:30:12.880Z'
---

## Overview

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

ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES

parse_uac2_sample_rate_range() caps the number of enumerated
rates at MAX_NR_RATES, but it only breaks out of the current
rate loop. A malformed UAC2 RANGE response with additional
triplets continues parsing the remaining triplets and repeatedly
prints "invalid uac2 rates" while probe still holds
register_mutex.

Stop the whole parse once the cap is reached and return the
number of rates collected so far.

## Affected

- `linux_kernel >= 3.0.81, < 3.1`
- `linux_kernel >= 3.2.47, < 5.10.258`
- `linux_kernel >= 5.11, < 5.15.209`
- `linux_kernel >= 5.16, < 6.1.175`
- `linux_kernel >= 6.2, < 6.6.140`
- `linux_kernel >= 6.7, < 6.12.86`
- `linux_kernel >= 6.13, < 6.18.27`
- `linux_kernel >= 6.19, < 7.0.4`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.4`