Uninitialized stream config in Linux kernel rt1017-sdca-sdw driver
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
The Linux kernel ASoC driver for the rt1017-sdca-sdw codec passes a stream configuration structure to sdw_stream_add_slave() without initializing it. The type field may contain garbage, which is later copied into the stream type.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Update the Linux kernel to 6.6.160, 6.12.113, 6.18.56, 7.2.10 or 7.3, using the fixed release for the branch in use. Kernels from 6.6 before these fixed releases are affected.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Linux (Linux) Fixed in 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- 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
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-18 Threatist record created from CVE-2026-98743
- 2026-10-18 Alias added: GHSA-33xw-2m9p-9fgf
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/Linux@30a60e74ee71de027bf1387ac20d73e863bbf77b, Linux/[email protected] · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-23 Affected versions changed · Red Hat
- 2026-10-23 CVSS score added · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
References
Other 5
- https://git.kernel.org/stable/c/30a60e74ee71de027bf1387ac20d73e863bbf77b
- https://git.kernel.org/stable/c/4e337c24c0a97fcdb394f954208971de5d372066
- https://git.kernel.org/stable/c/d195c8c763fdd0a7f74a34973f8946215a708f1e
- https://git.kernel.org/stable/c/7791ebf56eb4ab6b7a20252757a3029bc8068715
- https://git.kernel.org/stable/c/174d160884199cad97413f33fe1b56027dc0d3e1
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Sources
- CVE-2026-98743 · CVE Program
- CVE-2026-98743 · NVD
- FIRST EPSS
- GHSA-33xw-2m9p-9fgf · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98743 · Red Hat security data · CC BY 4.0
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