---
id: CVE-2026-74295
title: 'ASoC: codecs: hdac_hdmi: Validate written enum value'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: codecs: hdac_hdmi: Validate written enum value

  hdac_hdmi_set_pin_port_mux() uses the written enum value to index the
  texts array before calling snd_soc_dapm_put_…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    216336418c007c4b44c650acf2fd3d2de5bb81e8
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    bc464a6a9e352daa17b1636c090cf3185710b9a0
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    8cbf24714d6b3f553fc959632c9781176a73a9a7
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    7f02e9064b6f84e7f93c72f134306271eb4f7de4
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    9131e4b023e0db5764680034bdc94aeae0b0f33d
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    d8961b5c7889b6ecc00f1409d36826df1665df27
  - >-
    Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f <
    0b08baeccdcf52fad328ad645f5b4fbee04eea34
  - Linux 4.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T18:52:31.546747Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:55:31.120Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-74295'
references:
  - url: 'https://git.kernel.org/stable/c/216336418c007c4b44c650acf2fd3d2de5bb81e8'
  - url: 'https://git.kernel.org/stable/c/bc464a6a9e352daa17b1636c090cf3185710b9a0'
  - url: 'https://git.kernel.org/stable/c/8cbf24714d6b3f553fc959632c9781176a73a9a7'
  - url: 'https://git.kernel.org/stable/c/7f02e9064b6f84e7f93c72f134306271eb4f7de4'
  - url: 'https://git.kernel.org/stable/c/9131e4b023e0db5764680034bdc94aeae0b0f33d'
  - url: 'https://git.kernel.org/stable/c/d8961b5c7889b6ecc00f1409d36826df1665df27'
  - url: 'https://git.kernel.org/stable/c/0b08baeccdcf52fad328ad645f5b4fbee04eea34'
tags:
  - cve.org
epss: 0.00167
epssPercentile: 0.05528
ingestedAt: '2026-10-16T19:46:24.382Z'
---

## Overview

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

ASoC: codecs: hdac_hdmi: Validate written enum value

hdac_hdmi_set_pin_port_mux() uses the written enum value to index the
texts array before calling snd_soc_dapm_put_enum_double(), which validates
that the value is within the enum item range.

An out-of-range value can therefore make the driver read past the texts
array before the helper rejects the write. Move the lookup after the helper
has accepted the value.

## Affected

- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < 216336418c007c4b44c650acf2fd3d2de5bb81e8`
- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < bc464a6a9e352daa17b1636c090cf3185710b9a0`
- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < 8cbf24714d6b3f553fc959632c9781176a73a9a7`
- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < 7f02e9064b6f84e7f93c72f134306271eb4f7de4`
- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < 9131e4b023e0db5764680034bdc94aeae0b0f33d`
- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < d8961b5c7889b6ecc00f1409d36826df1665df27`
- `Linux >= 4a3478debf36c0aa0cf0860daec245b13cd4448f < 0b08baeccdcf52fad328ad645f5b4fbee04eea34`
- `Linux 4.6`

## Remediation

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