# netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry

CVE record · `CVE-2026-43114`

- **Identifiers:** `CVE-2026-43114`
- **State:** Confirmed
- **Severity:** CVSS 9.4 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html) · [CWE-480](https://cwe.mitre.org/data/definitions/480.html)
- **Tags:** [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md) · [CWE-480](https://agentprime.io/advisories/tag/cwe-480.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 May 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 May 2026, 07:40 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.

## Critical

Critical, because:

- CVSS score 9.4: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before f8c39983fc9c1a978c82e6f2df7bfba8a8561587` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before c7babe2f28b507e17f28e9f753b7caec72d4857f` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before 1c43f0dd8691ddf8884793b481ddc7511cf593c3` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before fa4f1f52528c73989d820f32bfca06bec5afeece` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before 3d53f9aafd469ae1ea27051e00f5b96ca1b55d52` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before 07de44424bb7f17ef9357e8535df96d9e97c40cb` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before 0abbc43f71d99baadeeba6fa3fe1c80b676f57ed` (git)
  - affected: `7400b063969bdca4a06cd97f1294d765c8eecbe1 to before d3c0037ffe1273fa1961e779ff6906234d6cf53c` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.7`
  - unaffected: `before 5.7` (semver)
  - unaffected: `5.10.258 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.209 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.175 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.136 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.83 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.24 to 6.18.*, inclusive` (semver)
  - unaffected: `6.19.14 to 6.19.*, inclusive` (semver)
  - unaffected: `7.0 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

- 9.4 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L`, from CNA (Linux) (used for this record)
- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0037, the 31st percentile, on 7 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 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-43114](https://www.cve.org/CVERecord?id=CVE-2026-43114)
- [NVD: CVE-2026-43114](https://nvd.nist.gov/vuln/detail/CVE-2026-43114)

### References from the CNA

- <https://git.kernel.org/stable/c/f8c39983fc9c1a978c82e6f2df7bfba8a8561587>
- <https://git.kernel.org/stable/c/c7babe2f28b507e17f28e9f753b7caec72d4857f>
- <https://git.kernel.org/stable/c/1c43f0dd8691ddf8884793b481ddc7511cf593c3>
- <https://git.kernel.org/stable/c/fa4f1f52528c73989d820f32bfca06bec5afeece>
- <https://git.kernel.org/stable/c/3d53f9aafd469ae1ea27051e00f5b96ca1b55d52>
- <https://git.kernel.org/stable/c/07de44424bb7f17ef9357e8535df96d9e97c40cb>
- <https://git.kernel.org/stable/c/0abbc43f71d99baadeeba6fa3fe1c80b676f57ed>
- <https://git.kernel.org/stable/c/d3c0037ffe1273fa1961e779ff6906234d6cf53c>

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-2026-43114>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-43114/>. Everything for agents: <https://agentprime.io/llms.txt>.