# netfilter: flowtable: publish GC-visible tuple last

CVE record · `CVE-2026-74746`

- **Identifiers:** `CVE-2026-74746`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 26 Aug 2026
- **Updated:** 16 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 26 Aug 2026, 14:36 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 9.8: 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: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before 0a00254585827f1695aa2700114af622ea754cfa` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before be345dcbddb4643a54252b954af974b16eda8f91` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before 211ee5d998d92a7d548811939c65942d06c146e4` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before d37917e7bebe078f3c17e47fd6fc1c9f6e8497b2` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before 972fdf7c4f5c282a239c88fea614b056c33dc025` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before d9d3050a70efe217e73a0751e55fdae6a7092620` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before d16b71231e65cb05daea2b45701fcf09cef041e7` (git)
  - affected: `ac2a66665e231847cab11b8c8e844ce43207dd2e to before 2014ac62df9d45bb9a004a043e85df7be09ed780` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.16`
  - unaffected: `before 4.16` (semver)
  - unaffected: `5.10.266 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.217 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.184 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.153 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.105 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.46 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.10 to 7.1.*, 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

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0054, the 45th percentile, on 15 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 26 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-74746](https://www.cve.org/CVERecord?id=CVE-2026-74746)
- [NVD: CVE-2026-74746](https://nvd.nist.gov/vuln/detail/CVE-2026-74746)

### References from the CNA

- <https://git.kernel.org/stable/c/0a00254585827f1695aa2700114af622ea754cfa>
- <https://git.kernel.org/stable/c/be345dcbddb4643a54252b954af974b16eda8f91>
- <https://git.kernel.org/stable/c/211ee5d998d92a7d548811939c65942d06c146e4>
- <https://git.kernel.org/stable/c/d37917e7bebe078f3c17e47fd6fc1c9f6e8497b2>
- <https://git.kernel.org/stable/c/972fdf7c4f5c282a239c88fea614b056c33dc025>
- <https://git.kernel.org/stable/c/d9d3050a70efe217e73a0751e55fdae6a7092620>
- <https://git.kernel.org/stable/c/d16b71231e65cb05daea2b45701fcf09cef041e7>
- <https://git.kernel.org/stable/c/2014ac62df9d45bb9a004a043e85df7be09ed780>

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-2026-74746>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-74746/>. Everything for agents: <https://agentprime.io/llms.txt>.