---
id: CVE-2026-98743
title: >-
  kernel: ASoC: codecs: rt1017-sdca-sdw: fix uninitialized stream_config->type
  (CVE-2026-98743)
summary: >-
  A flaw was found in the Linux kernel's rt1017 SDCA audio codec driver. The
  driver fails to initialize stream configuration data before passing it to the
  sound subsystem, leaving configuration fields populated with uninitialized
  memory. A l…
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'
cvssSource: vendor
cwe: CWE-908
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= 2b7aecd58528551e6e3da58091ff7ceb4718e6be <
    30a60e74ee71de027bf1387ac20d73e863bbf77b
  - >-
    Linux >= 2b7aecd58528551e6e3da58091ff7ceb4718e6be <
    4e337c24c0a97fcdb394f954208971de5d372066
  - >-
    Linux >= 2b7aecd58528551e6e3da58091ff7ceb4718e6be <
    d195c8c763fdd0a7f74a34973f8946215a708f1e
  - >-
    Linux >= 2b7aecd58528551e6e3da58091ff7ceb4718e6be <
    7791ebf56eb4ab6b7a20252757a3029bc8068715
  - >-
    Linux >= 2b7aecd58528551e6e3da58091ff7ceb4718e6be <
    174d160884199cad97413f33fe1b56027dc0d3e1
  - Linux 6.6
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T02:46:15+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98743.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98743.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98743'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555125'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98743'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98743'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98743.mbox
  - url: 'https://git.kernel.org/stable/c/30a60e74ee71de027bf1387ac20d73e863bbf77b'
  - url: 'https://git.kernel.org/stable/c/4e337c24c0a97fcdb394f954208971de5d372066'
  - url: 'https://git.kernel.org/stable/c/d195c8c763fdd0a7f74a34973f8946215a708f1e'
  - url: 'https://git.kernel.org/stable/c/7791ebf56eb4ab6b7a20252757a3029bc8068715'
  - url: 'https://git.kernel.org/stable/c/174d160884199cad97413f33fe1b56027dc0d3e1'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00168
epssPercentile: 0.06037
ingestedAt: '2026-10-18T16:47:32.502Z'
---

## Overview

A flaw was found in the Linux kernel's rt1017 SDCA audio codec driver. The driver fails to initialize stream configuration data before passing it to the sound subsystem, leaving configuration fields populated with uninitialized memory. A local user could exploit this flaw during audio stream configuration, potentially resulting in system instability or a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98743.json)

**kernel: ASoC: codecs: rt1017-sdca-sdw: fix uninitialized stream_config->type** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Refer to the advisory for fix availability.