# ip6_gre: remove obsolete ERSPAN PMTU update

CVE record · `CVE-2026-99041`

- **Identifiers:** `CVE-2026-99041`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:22 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: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before 2e151c74bcc53e3ed313bd1c21b0d5bb442edbc0` (git)
  - affected: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before ba72ed1c8476ce68eb7152dfcbc5330cefcbaa91` (git)
  - affected: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before b14a682ad7d45345701e08f9279d483a1da8b36c` (git)
  - affected: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before f5b143f4cd3fb7673df8d727550478a4b762908a` (git)
  - affected: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before 2d06cb25a497d3a7034ef9d172626c2d6620a0f1` (git)
  - affected: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before 8f27260b989f488760289276377db24fbfb20bfa` (git)
  - affected: `5a963eb61b7c39e6c422b6e48619d19d04719358 to before 8bc60db48e8cba35488bbd6e1f94aa990afa275a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.16`
  - unaffected: `before 4.16` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.58 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.11 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:** 0.0017, the 6th percentile, on 5 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-99041](https://www.cve.org/CVERecord?id=CVE-2026-99041)
- [NVD: CVE-2026-99041](https://nvd.nist.gov/vuln/detail/CVE-2026-99041)

### References from the CNA

- <https://git.kernel.org/stable/c/2e151c74bcc53e3ed313bd1c21b0d5bb442edbc0>
- <https://git.kernel.org/stable/c/ba72ed1c8476ce68eb7152dfcbc5330cefcbaa91>
- <https://git.kernel.org/stable/c/b14a682ad7d45345701e08f9279d483a1da8b36c>
- <https://git.kernel.org/stable/c/f5b143f4cd3fb7673df8d727550478a4b762908a>
- <https://git.kernel.org/stable/c/2d06cb25a497d3a7034ef9d172626c2d6620a0f1>
- <https://git.kernel.org/stable/c/8f27260b989f488760289276377db24fbfb20bfa>
- <https://git.kernel.org/stable/c/8bc60db48e8cba35488bbd6e1f94aa990afa275a>

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-2026-99041>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-99041/>. Everything for agents: <https://agentprime.io/llms.txt>.