# ecryptfs: hold msg ctx list lock when cleaning daemon queue

CVE record · `CVE-2026-89609`

- **Identifiers:** `CVE-2026-89609`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:45 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: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 64d8998e36cfd2bb7114f3af0aa51c5a559a39b3` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 4d50b8aea11ad9594c8704a4c647e11311ab7b19` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 956541efd125a10442f9514668bc5c852702c93b` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 7e48afafe7abc275f7b6916613bb18b821e7d94a` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 0d9636ecba34bd553ecf19049f7705505aea62fd` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 4c02acbe0a2692ca9991c51e62bbe6d6b59dac31` (git)
  - affected: `f66e883eb6186bc43a79581b67aff7d1a69d0ff1 to before 779972513c2fa8c7938e54976f686091dafff22f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.26`
  - unaffected: `before 2.6.26` (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: `6.12.109 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

## 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:** 0.0018, the 7th 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-2026-89609](https://www.cve.org/CVERecord?id=CVE-2026-89609)
- [NVD: CVE-2026-89609](https://nvd.nist.gov/vuln/detail/CVE-2026-89609)

### References from the CNA

- <https://git.kernel.org/stable/c/64d8998e36cfd2bb7114f3af0aa51c5a559a39b3>
- <https://git.kernel.org/stable/c/4d50b8aea11ad9594c8704a4c647e11311ab7b19>
- <https://git.kernel.org/stable/c/956541efd125a10442f9514668bc5c852702c93b>
- <https://git.kernel.org/stable/c/ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a>
- <https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a>
- <https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd>
- <https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31>
- <https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f>

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-2026-89609>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89609/>. Everything for agents: <https://agentprime.io/llms.txt>.