# ecryptfs: reject too-small tag 70 packets

CVE record · `CVE-2026-89606`

- **Identifiers:** `CVE-2026-89606`
- **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: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before df5f375a6151ef71f636da044bcef90c26697255` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before 5668121974eb7f7aa82793a9d0d13abadb8904dc` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before 2e5afed9503dd1d85004c09503adc2cb584c0188` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before 414a0f04feb06f03523edf7e2a8be1d7f1a9b160` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before 9d88391bbed76eb091cddd50b0af87b1c6f22589` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before b31da1ecf13929a8d7f8d2727843d2fe35396b75` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before d2869768eab5648e6edc05f47e0716e5328e6681` (git)
  - affected: `9c79f34f7ee71cd28272332b424ca64b2be006ab to before e97bbe1b2bd82ec2ae37ad2e4965b4d3e78bbf7f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.29`
  - unaffected: `before 2.6.29` (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:** 0.0014, the 3rd 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-2026-89606](https://www.cve.org/CVERecord?id=CVE-2026-89606)
- [NVD: CVE-2026-89606](https://nvd.nist.gov/vuln/detail/CVE-2026-89606)

### References from the CNA

- <https://git.kernel.org/stable/c/df5f375a6151ef71f636da044bcef90c26697255>
- <https://git.kernel.org/stable/c/5668121974eb7f7aa82793a9d0d13abadb8904dc>
- <https://git.kernel.org/stable/c/2e5afed9503dd1d85004c09503adc2cb584c0188>
- <https://git.kernel.org/stable/c/414a0f04feb06f03523edf7e2a8be1d7f1a9b160>
- <https://git.kernel.org/stable/c/9d88391bbed76eb091cddd50b0af87b1c6f22589>
- <https://git.kernel.org/stable/c/b31da1ecf13929a8d7f8d2727843d2fe35396b75>
- <https://git.kernel.org/stable/c/d2869768eab5648e6edc05f47e0716e5328e6681>
- <https://git.kernel.org/stable/c/e97bbe1b2bd82ec2ae37ad2e4965b4d3e78bbf7f>

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-2026-89606>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89606/>. Everything for agents: <https://agentprime.io/llms.txt>.