Uninitialized stream type in Linux kernel rt712-sdca-dmic codec
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
- Partial Red Hat: 5 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
The Linux kernel from 6.4 contains an rt712-sdca-dmic ASoC codec driver that passes a SoundWire stream configuration structure to sdw_stream_add_slave() without initializing it. The type field may hold garbage, which is later copied into the stream.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
Description from the CNA
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: rt712-sdca-dmic: 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
Upgrade the Linux kernel to 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3. Red Hat lists no fix available for Red Hat Enterprise Linux 8, 9 and 10 and Red Hat OpenShift Container Platform 4 and 5.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
- Fix · CNA Linux (Linux) Fixed in 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-06 Threatist record created from CVE-2026-98263
- 2026-10-06 Alias added: GHSA-8pw2-wmm5-rgrf
- 2026-10-11 Affected versions changed · Red Hat
- 2026-10-11 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 5
- https://git.kernel.org/stable/c/6507055733a9d397289277408b52daf422f8a814
- https://git.kernel.org/stable/c/c144447c207e2be24d6ac86d544691ba464caad8
- https://git.kernel.org/stable/c/d93988c9e58d37b677f6ee8aceae741c8d1e30ad
- https://git.kernel.org/stable/c/a318ee718e7448cd6bf62d9b3197b6a6a8d4701e
- https://git.kernel.org/stable/c/03a5699a0a04309c597683967aaaf25d1e555ea2
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Sources
- CVE-2026-98263 · CVE Program
- CVE-2026-98263 · NVD
- FIRST EPSS
- GHSA-8pw2-wmm5-rgrf · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98263 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences