# netfilter: nf_conntrack_expect: zero at allocation time

CVE record · `CVE-2026-98873`

- **Identifiers:** `CVE-2026-98873`
- **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:** 26 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 11:37 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: `076a0ca02644657b13e4af363f487ced2942e9cb to before 39cb6ff947c16a576ea68c5f272e634acdcb0085` (git)
  - affected: `076a0ca02644657b13e4af363f487ced2942e9cb to before 90545aa07a183887e9d72ce573c18e08f62e2c91` (git)
  - affected: `076a0ca02644657b13e4af363f487ced2942e9cb to before 9c11d7ea5ff4dbe162e79f00188814ef5483c295` (git)
  - affected: `076a0ca02644657b13e4af363f487ced2942e9cb to before b7f3ee925aee9f1f547d539bc03c35433c238958` (git)
  - affected: `076a0ca02644657b13e4af363f487ced2942e9cb to before 824397af7bfe14edad374c64253dae0187ca623d` (git)
  - affected: `076a0ca02644657b13e4af363f487ced2942e9cb to before a39ecb856514274c80d0fac4d128dba6b266a8ed` (git)
  - affected: `076a0ca02644657b13e4af363f487ced2942e9cb to before 241ccd2fed9051db443aadce248fc0ab30f55e97` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.4`
  - unaffected: `before 3.4` (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: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98873](https://www.cve.org/CVERecord?id=CVE-2026-98873)
- [NVD: CVE-2026-98873](https://nvd.nist.gov/vuln/detail/CVE-2026-98873)

### References from the CNA

- <https://git.kernel.org/stable/c/39cb6ff947c16a576ea68c5f272e634acdcb0085>
- <https://git.kernel.org/stable/c/90545aa07a183887e9d72ce573c18e08f62e2c91>
- <https://git.kernel.org/stable/c/9c11d7ea5ff4dbe162e79f00188814ef5483c295>
- <https://git.kernel.org/stable/c/b7f3ee925aee9f1f547d539bc03c35433c238958>
- <https://git.kernel.org/stable/c/824397af7bfe14edad374c64253dae0187ca623d>
- <https://git.kernel.org/stable/c/a39ecb856514274c80d0fac4d128dba6b266a8ed>
- <https://git.kernel.org/stable/c/241ccd2fed9051db443aadce248fc0ab30f55e97>

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-2026-98873>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98873/>. Everything for agents: <https://agentprime.io/llms.txt>.