CVE-2026-98743

Received Received - Intake

ASoC: rt1017-sdca-sdw Uninitialized Stream Type Fix

Publication date: 2026-10-18

Last updated on: 2026-10-21

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: rt1017-sdca-sdw: fix uninitialized stream_config->type stream_config is not initialized before being passed to sdw_stream_add_slave(). The type field may contain garbage and is later copied to stream->type by sdw_config_stream(). Zero-initialize stream_config so type defaults to SDW_STREAM_PCM. While at it, use snd_sdw_params_to_config() helper instead of open-coding the same logic.

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Meta Information

Published

2026-10-18

Last Modified

2026-10-21

Generated

2026-11-08

AI Q&A

2026-10-18

EPSS Evaluated

2026-11-07

NVD

CVE-2026-98743

EUVD

EUVD-2026-103828

Affected Vendors & Products

Vendor	Product	Version / Range
Linux	Linux	2b7aecd58528551e6e3da58091ff7ceb4718e6be
Linux	Linux	2b7aecd58528551e6e3da58091ff7ceb4718e6be
Linux	Linux	2b7aecd58528551e6e3da58091ff7ceb4718e6be
Linux	Linux	2b7aecd58528551e6e3da58091ff7ceb4718e6be
Linux	Linux	6.6

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's ASoC (ALSA System on Chip) codec driver for the rt1017-sdca-sdw codec. It involves an uninitialized variable where the stream_config structure's type field may contain garbage values. This could lead to incorrect stream type handling in the SoundWire subsystem.

Detection Guidance

This vulnerability is specific to the Linux kernel's ASoC subsystem and the rt1017-sdca-sdw codec driver. Detection requires checking the kernel version and whether the affected driver is loaded. Use commands like 'uname -a' to check kernel version and 'lsmod | grep rt1017' to see if the vulnerable module is loaded.

Impact Analysis

This could cause audio subsystem malfunctions, including distorted sound, device failures, or system crashes. It may affect systems using the rt1017-sdca-sdw codec with SoundWire audio interfaces.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It is a low-level kernel audio codec issue that could lead to undefined behavior in stream configuration but does not involve data exposure or privacy violations typical of compliance concerns.

Mitigation Strategies

Update the Linux kernel to the patched version where stream_config is properly initialized. Check for kernel updates from your distribution vendor that include the fix for CVE-2026-98743.

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