# ipv6: null-check fib6_node before accessing in \_\_ip6_del_rt_siblings()

CVE record · `CVE-2026-97974`

- **Identifiers:** `CVE-2026-97974`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:23 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: `bd11ff421d36abdb585b9104fa70057bf01b3110 to before e7ff91f19c1aae039a4257fa86fe849afe185291` (git)
  - affected: `bd11ff421d36abdb585b9104fa70057bf01b3110 to before 1155234c2227cf36072a43e1e09119472ade7ca7` (git)
  - affected: `bd11ff421d36abdb585b9104fa70057bf01b3110 to before cdca92eddc025fdb90071be97738f7d55a65f8dd` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.16`
  - unaffected: `before 6.16` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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 5th percentile, on 12 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 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97974](https://www.cve.org/CVERecord?id=CVE-2026-97974)
- [NVD: CVE-2026-97974](https://nvd.nist.gov/vuln/detail/CVE-2026-97974)

### References from the CNA

- <https://git.kernel.org/stable/c/e7ff91f19c1aae039a4257fa86fe849afe185291>
- <https://git.kernel.org/stable/c/1155234c2227cf36072a43e1e09119472ade7ca7>
- <https://git.kernel.org/stable/c/cdca92eddc025fdb90071be97738f7d55a65f8dd>

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-2026-97974>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97974/>. Everything for agents: <https://agentprime.io/llms.txt>.