CVE-2026-98743 Linux CVE debrief

Who should care

Defenders responsible for Linux kernel systems, particularly those using the ASoC codecs rt1017-sdca-sdw, should assess exposure and prioritize patching to prevent potential issues.

Why it matters

The Linux kernel vulnerability in ASoC codecs rt1017-sdca-sdw requires patching to prevent potential issues. Defenders should assess exposure, prioritize patching, and monitor Linux kernel updates.

• Defenders need to verify and apply patches to prevent potential issues with the Linux kernel's ASoC codecs rt1017-sdca-sdw.
• Systems using the affected Linux kernel version may require updates to prevent potential problems.
• Defenders should monitor Linux kernel updates and advisories for potential related vulnerabilities.

Technical summary

The Linux kernel has a vulnerability in the ASoC codecs rt1017-sdca-sdw. The stream_config is not initialized before being passed to sdw_stream_add_slave(), which can lead to the type field containing garbage and being copied to stream->type by sdw_config_stream(). To fix this, zero-initialize stream_config so that type defaults to SDW_STREAM_PCM. Defenders should assess exposure and prioritize patching to prevent potential issues with the Linux kernel's ASoC codecs rt1017-sdca-sdw, particularly those using the affected Linux kernel version.

Defensive priority

Defenders should prioritize verifying and applying patches for the Linux kernel, particularly for systems using the ASoC codecs rt1017-sdca-sdw. This involves checking the kernel version and updating to a patched version if necessary.

Recommended defensive actions

• Verify and apply patches for the Linux kernel, particularly for systems using the ASoC codecs rt1017-sdca-sdw.
• Check kernel version and update to a patched version if necessary.
• Monitor Linux kernel updates and advisories for potential related vulnerabilities.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and source references indicate a vulnerability in the Linux kernel's ASoC codecs rt1017-sdca-sdw. The vulnerability is related to the uninitialized stream_config->type field. The source references provide kernel commit hashes for the fix.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.