# ALSA: pcxhr: initialize mutexes before requesting threaded IRQ

CVE record · `CVE-2026-80967`

- **Identifiers:** `CVE-2026-80967`
- **State:** Confirmed
- **Severity:** CVSS 8.4 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before 20a0f80f67a1495a57e5a3ba0fa172a0f919691d` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before 039602d6ddb1febbb0561b30dab04461f78a1319` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before a5f405adb0229c9cf64eb3d695c333c92e3d3d4f` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before ede25b7fea0d7487ee8528bf35dc7b9a1cbcd814` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before c069b3cfd753d6688ea0271c43553631ab38ce10` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before 7ef9ad82d95dd3c74570d80a689a0570fbc7539e` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before 7cf280fbef5db6310e1b32074c8c34d1ba459796` (git)
  - affected: `9bef72bdb26e291d6dffb04768741a0e49582666 to before 6c97817e20598e5473094e0e38d1f51f1cf4dfff` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.18`
  - unaffected: `before 3.18` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The Linux kernel ALSA pcxhr driver is affected from version 3.18 until it is fixed. During probe, an interrupt handler can run against mutexes that are not yet initialized, and the source gives few details on the required access or the resulting impact. Upgrade to 5.10.273, 5.15.221, 6.1.188, or 6.6.157, or to a later release in those series.

Written 12 Nov 2026.

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 8.4 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 8th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80967](https://www.cve.org/CVERecord?id=CVE-2026-80967)
- [NVD: CVE-2026-80967](https://nvd.nist.gov/vuln/detail/CVE-2026-80967)

### References from the CNA

- <https://git.kernel.org/stable/c/20a0f80f67a1495a57e5a3ba0fa172a0f919691d>
- <https://git.kernel.org/stable/c/039602d6ddb1febbb0561b30dab04461f78a1319>
- <https://git.kernel.org/stable/c/a5f405adb0229c9cf64eb3d695c333c92e3d3d4f>
- <https://git.kernel.org/stable/c/ede25b7fea0d7487ee8528bf35dc7b9a1cbcd814>
- <https://git.kernel.org/stable/c/c069b3cfd753d6688ea0271c43553631ab38ce10>
- <https://git.kernel.org/stable/c/7ef9ad82d95dd3c74570d80a689a0570fbc7539e>
- <https://git.kernel.org/stable/c/7cf280fbef5db6310e1b32074c8c34d1ba459796>
- <https://git.kernel.org/stable/c/6c97817e20598e5473094e0e38d1f51f1cf4dfff>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-80967>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80967/>. Everything for agents: <https://agentprime.io/llms.txt>.