# seg6: set IPSKB_L3SLAVE from IP6SKB_L3SLAVE on IPIP decapsulation

CVE record · `CVE-2026-98306`

- **Identifiers:** `CVE-2026-98306`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:46 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: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before 1d9f5c78903dd25a3556229eb716dd465c5f3573` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before 72f410616000d21a0a6ec6c93a60301b9c92e95c` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before e4d7c52f15f572608374947c6c802052e1a2fc82` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before 5130afa025c95faa621adf8bac525baeb2b290d2` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before f8fb4738ccef5f9d107845b05734a56352747b1a` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before ddf60220c925b54a1714c4722fdbdb12833232d0` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before 8c16e1ccc082a3763dfc6bc2d3f658c1a6336f9d` (git)
  - affected: `891ef8dd2a8d14e4e73a81dcdb135b574c57f556 to before 7616242a2b37883f7322aaa1d2bd6cd0fed28315` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.14`
  - unaffected: `before 4.14` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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:** 0.0018, the 8th percentile, on 10 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98306](https://www.cve.org/CVERecord?id=CVE-2026-98306)
- [NVD: CVE-2026-98306](https://nvd.nist.gov/vuln/detail/CVE-2026-98306)

### References from the CNA

- <https://git.kernel.org/stable/c/1d9f5c78903dd25a3556229eb716dd465c5f3573>
- <https://git.kernel.org/stable/c/72f410616000d21a0a6ec6c93a60301b9c92e95c>
- <https://git.kernel.org/stable/c/e4d7c52f15f572608374947c6c802052e1a2fc82>
- <https://git.kernel.org/stable/c/5130afa025c95faa621adf8bac525baeb2b290d2>
- <https://git.kernel.org/stable/c/f8fb4738ccef5f9d107845b05734a56352747b1a>
- <https://git.kernel.org/stable/c/ddf60220c925b54a1714c4722fdbdb12833232d0>
- <https://git.kernel.org/stable/c/8c16e1ccc082a3763dfc6bc2d3f658c1a6336f9d>
- <https://git.kernel.org/stable/c/7616242a2b37883f7322aaa1d2bd6cd0fed28315>

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-2026-98306>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98306/>. Everything for agents: <https://agentprime.io/llms.txt>.