# ipvs: clear IPv4 options after rebasing tunnel ICMP errors

CVE record · `CVE-2026-74669`

- **Identifiers:** `CVE-2026-74669`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 22 Aug 2026
- **Updated:** 16 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 22 Aug 2026, 15:32 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before 79ffa99202c944467e28b13b513bf2998732edff` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before c9413b50204738fbc429bb86bf01353c393a6c28` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before 37c61b3745129cbd682c557b51345828120972e5` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before ed246dd85ebf27c1f6b7897834d40786c0ca3006` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before 6f46fc460e9316062bdcdf89199eb5d7a33da33b` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before 75eec935444db4af2123e0491936f6e273d7ea00` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before 384b4dae14277d369221d187e9b3af56c79d2e50` (git)
  - affected: `f2edb9f7706dcb2c0d9a362b2ba849efe3a97f5e to before e0ba936287dfe9783426aac27e5fd76fe35b38c9` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.7`
  - unaffected: `before 3.7` (semver)
  - unaffected: `5.10.265 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.216 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.183 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.152 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.104 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.45 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.9 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0051, the 44th percentile, on 15 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 22 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-74669](https://www.cve.org/CVERecord?id=CVE-2026-74669)
- [NVD: CVE-2026-74669](https://nvd.nist.gov/vuln/detail/CVE-2026-74669)

### References from the CNA

- <https://git.kernel.org/stable/c/79ffa99202c944467e28b13b513bf2998732edff>
- <https://git.kernel.org/stable/c/c9413b50204738fbc429bb86bf01353c393a6c28>
- <https://git.kernel.org/stable/c/37c61b3745129cbd682c557b51345828120972e5>
- <https://git.kernel.org/stable/c/ed246dd85ebf27c1f6b7897834d40786c0ca3006>
- <https://git.kernel.org/stable/c/6f46fc460e9316062bdcdf89199eb5d7a33da33b>
- <https://git.kernel.org/stable/c/75eec935444db4af2123e0491936f6e273d7ea00>
- <https://git.kernel.org/stable/c/384b4dae14277d369221d187e9b3af56c79d2e50>
- <https://git.kernel.org/stable/c/e0ba936287dfe9783426aac27e5fd76fe35b38c9>

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-2026-74669>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-74669/>. Everything for agents: <https://agentprime.io/llms.txt>.