---
id: CVE-2024-56657
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: control: Avoid WARN() for symlink errors

  Using WARN() for showing the error of symlink creations don't give
  more information than telling that something goes wro…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: control: Avoid WARN() for symlink errors

  Using WARN() for showing the error of symlink creations don't give
  more information than telling that something goes wro…
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 >= 5.13, < 6.6.67'
  - 'linux_kernel >= 6.7, < 6.12.6'
  - linux_kernel = 6.13
patched:
  - linux_kernel 6.12.6
published: '2024-12-27'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:17:09.283'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-56657'
references:
  - url: 'https://git.kernel.org/stable/c/365ee29e559269cbb2108c4cc05dd8e262b4e84e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/36c0764474b637bbee498806485bed524cad486b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4e5a92a7223c83c1f5f2db6cd010ac9347948972'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b2e538a9827dd04ab5273bf4be8eb2edb84357b0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d5a1ca7b59804d6779644001a878ed925a4688ca'
    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: 0.00221
epssPercentile: 0.12621
ingestedAt: '2026-10-15T03:30:12.775Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-10-01T20:00:13.236177Z'
---

## Overview

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

ALSA: control: Avoid WARN() for symlink errors

Using WARN() for showing the error of symlink creations don't give
more information than telling that something goes wrong, since the
usual code path is a lregister callback from each control element
creation.  More badly, the use of WARN() rather confuses fuzzer as if
it were serious issues.

This patch downgrades the warning messages to use the normal dev_err()
instead of WARN().  For making it clearer, add the function name to
the prefix, too.

## Affected

- `linux_kernel >= 5.13, < 6.6.67`
- `linux_kernel >= 6.7, < 6.12.6`
- `linux_kernel = 6.13`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.12.6`