# ipv6: sr: enforce exact attribute length for SEG6_ATTR_DST

CVE record · `CVE-2026-98531`

- **Identifiers:** `CVE-2026-98531`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:17 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: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 050a0aa3c80907b8c60a396b7e04d48d8b1a9e70` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 209eefebee54c4a5f01d68b61e8ac9881eca2de9` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before e3ac68c1cdc2535d127b2bfd50c263d16c8e4199` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 66bf65fa109326e4c4ddeb0b94093379f72838fd` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 195813bb7324c338eaba0aaa02b18681ee65b670` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 6fcfc362344edea745a69f3a705de50b731f3418` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 94214cf0a08dd2c5f37aeeea46078d9dfe8e4a0e` (git)
  - affected: `915d7e5e5930b4f01d0971d93b9b25ed17d221aa to before 2d959c75c27f90e9ec489d18ce5ee6b852ad4741` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.10`
  - unaffected: `before 4.10` (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: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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:** 0.0022, the 12th percentile, on 8 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98531](https://www.cve.org/CVERecord?id=CVE-2026-98531)
- [NVD: CVE-2026-98531](https://nvd.nist.gov/vuln/detail/CVE-2026-98531)

### References from the CNA

- <https://git.kernel.org/stable/c/050a0aa3c80907b8c60a396b7e04d48d8b1a9e70>
- <https://git.kernel.org/stable/c/209eefebee54c4a5f01d68b61e8ac9881eca2de9>
- <https://git.kernel.org/stable/c/e3ac68c1cdc2535d127b2bfd50c263d16c8e4199>
- <https://git.kernel.org/stable/c/66bf65fa109326e4c4ddeb0b94093379f72838fd>
- <https://git.kernel.org/stable/c/195813bb7324c338eaba0aaa02b18681ee65b670>
- <https://git.kernel.org/stable/c/6fcfc362344edea745a69f3a705de50b731f3418>
- <https://git.kernel.org/stable/c/94214cf0a08dd2c5f37aeeea46078d9dfe8e4a0e>
- <https://git.kernel.org/stable/c/2d959c75c27f90e9ec489d18ce5ee6b852ad4741>

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-2026-98531>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98531/>. Everything for agents: <https://agentprime.io/llms.txt>.