SB20261022350 - Use of Uninitialized Variable in Linux kernel soc codecs

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Main Vulnerability Database SB20261022350

SB20261022350 - Use of Uninitialized Variable in Linux kernel soc codecs

Published: October 22, 2026

Security Bulletin ID SB20261022350
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use of Uninitialized Variable (CVE-ID: CVE-2026-98743)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to potentially disrupt audio processing through an incorrectly configured SoundWire stream.

The vulnerability exists due to use of an uninitialized variable in the Linux kernel's rt1017_sdca_pcm_hw_params() function when configuring an audio stream. A local user can trigger stream configuration with an uninitialized stream_config.type value that is passed to sdw_stream_add_slave() and subsequently copied to stream->type by sdw_config_stream(), potentially disrupting audio processing.


Remediation

Install update from vendor's website.

References