# ALSA: seq: Don't leak the extension cell pointer in the bounce payload

CVE record · `CVE-2026-90220`

- **Identifiers:** `CVE-2026-90220`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:07 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: `05e2358fec8812c37516ccea63bc4b9956d864ba to before c92b2e6e418a3885758438dddcead6e954a9e095` (git)
  - affected: `93d260ce43a81df579c98bee92b91316df9c1c57 to before 42c3f856d13a91a0d4c302a0c6854813621136db` (git)
  - affected: `dae23c545eb5a2be3b27a82fd0f611894fb8ab69 to before b1e8d40663997aacaa198f37ce6893e07aaba77a` (git)
  - affected: `efc86691e4d8083d9e380ea95042c2cf679f65fd to before 6e6e471eef1d5d8cb056c7d364023fe048249204` (git)
  - affected: `efc86691e4d8083d9e380ea95042c2cf679f65fd to before 59e1592d3c270ff4642d5d6dc55c545306eb0693` (git)
  - affected: `eae296065ede41a24040e6a7c909ec970f78b4eb` (git)
  - affected: `0527a56cb327021cb73167cfddf0e49efa043500` (git)
  - affected: `6.12.97 to before 6.12.110` (semver)
  - affected: `6.18.40 to before 6.18.52` (semver)
  - affected: `6.6.160 to before 6.7` (semver)
  - affected: `7.1.5 to before 7.2` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `7.2`
  - unaffected: `before 7.2` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0020, the 10th 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90220](https://www.cve.org/CVERecord?id=CVE-2026-90220)
- [NVD: CVE-2026-90220](https://nvd.nist.gov/vuln/detail/CVE-2026-90220)

### References from the CNA

- <https://git.kernel.org/stable/c/c92b2e6e418a3885758438dddcead6e954a9e095>
- <https://git.kernel.org/stable/c/42c3f856d13a91a0d4c302a0c6854813621136db>
- <https://git.kernel.org/stable/c/b1e8d40663997aacaa198f37ce6893e07aaba77a>
- <https://git.kernel.org/stable/c/6e6e471eef1d5d8cb056c7d364023fe048249204>
- <https://git.kernel.org/stable/c/59e1592d3c270ff4642d5d6dc55c545306eb0693>

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-2026-90220>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90220/>. Everything for agents: <https://agentprime.io/llms.txt>.