---
id: CVE-2026-89944
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: hdac_hda: Fix hlink refcount leak on component registration failure

  hdac_hda_dev_probe() gets the HDA link with snd_hdac_ext_bus_link_get()
  before registering th…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: hdac_hda: Fix hlink refcount leak on component registration failure

  hdac_hda_dev_probe() gets the HDA link with snd_hdac_ext_bus_link_get()
  before registering th…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 6bae5ea9498926440ffc883f3dbceb0adc65e492 <
    7eef9ae3b4ef782557526dd8ba0c206f028d8c2f
  - >-
    Linux >= 6bae5ea9498926440ffc883f3dbceb0adc65e492 <
    e8ea01a0457080b0cc7c69c430c0ab65d84dc377
  - >-
    Linux >= 6bae5ea9498926440ffc883f3dbceb0adc65e492 <
    cb6b0b1a9d5a61ef841739d42c6211094e9c8e2c
  - >-
    Linux >= 6bae5ea9498926440ffc883f3dbceb0adc65e492 <
    6ad4892c4f5cb437a928a02f5b7d37d496aa9268
  - Linux 4.20
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T11:17:04.217'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89944'
references:
  - url: 'https://git.kernel.org/stable/c/6ad4892c4f5cb437a928a02f5b7d37d496aa9268'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7eef9ae3b4ef782557526dd8ba0c206f028d8c2f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cb6b0b1a9d5a61ef841739d42c6211094e9c8e2c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e8ea01a0457080b0cc7c69c430c0ab65d84dc377'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89944.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89944'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2535334'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89944'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89944'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89944.mbox
  - url: 'https://git.kernel.org/stable/c/60b5824ae259ad15f7878e4e763ec31ba4db55f2'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-16T10:53:53.965Z'
epss: 0.00201
epssPercentile: 0.09837
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-911
---

## Overview

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

ASoC: hdac_hda: Fix hlink refcount leak on component registration failure

hdac_hda_dev_probe() gets the HDA link with snd_hdac_ext_bus_link_get()
before registering the ASoC component. If component registration fails,
the function returns without dropping the link reference.

Always call snd_hdac_ext_bus_link_put() after the registration attempt so
the reference taken during probe is balanced on both success and failure.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-29 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89944.json)