# ALSA: pcm: Fix race between non-atomic ops and trigger-start

CVE record · `CVE-2026-89979`

- **Identifiers:** `CVE-2026-89979`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:32 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b1d12144557fceed5de6e22e2c2e30a40ed37702` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b2edc017f94c08bdd0b046a586e43ac771a2f942` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b599e7f16441386754ec083fa62a549bccb02fca` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before ad29779736cfd6f5595f0cab300dd7611418e363` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5abeb4f9f2023f001d693b4e5e1ebbf25e25d0eb` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 7ad2ea7c10044b08ecf7b04376916faf12e17a99` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 50afadf1ea66597116eb14e73c24da7ae99b759f` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before acac7b5e07349a9d10d78873afb4b93cd1dc721f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.270 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: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 13 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89979](https://www.cve.org/CVERecord?id=CVE-2026-89979)
- [NVD: CVE-2026-89979](https://nvd.nist.gov/vuln/detail/CVE-2026-89979)

### References from the CNA

- <https://git.kernel.org/stable/c/b1d12144557fceed5de6e22e2c2e30a40ed37702>
- <https://git.kernel.org/stable/c/b2edc017f94c08bdd0b046a586e43ac771a2f942>
- <https://git.kernel.org/stable/c/b599e7f16441386754ec083fa62a549bccb02fca>
- <https://git.kernel.org/stable/c/ad29779736cfd6f5595f0cab300dd7611418e363>
- <https://git.kernel.org/stable/c/5abeb4f9f2023f001d693b4e5e1ebbf25e25d0eb>
- <https://git.kernel.org/stable/c/7ad2ea7c10044b08ecf7b04376916faf12e17a99>
- <https://git.kernel.org/stable/c/50afadf1ea66597116eb14e73c24da7ae99b759f>
- <https://git.kernel.org/stable/c/acac7b5e07349a9d10d78873afb4b93cd1dc721f>

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-2026-89979>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89979/>. Everything for agents: <https://agentprime.io/llms.txt>.