# tcp: fix AO info use-after-free in tcp_ao_connect_init()

CVE record · `CVE-2026-80850`

- **Identifiers:** `CVE-2026-80850`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 4 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 15:55 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: `248411b8cb8974a1e1c8e43123c1e682fbd64969 to before 594ba77210a1f065832211851a2d7e14d11fcbdb` (git)
  - affected: `248411b8cb8974a1e1c8e43123c1e682fbd64969 to before 70051a57786d5b23f059fbaf5c8241eca14d42ed` (git)
  - affected: `248411b8cb8974a1e1c8e43123c1e682fbd64969 to before 284d7fd0eec8774bd6214921fbf525cf907c590e` (git)
  - affected: `248411b8cb8974a1e1c8e43123c1e682fbd64969 to before d17e88b6b60ff4ef64e0dd1444f935cb13dee1cd` (git)
  - affected: `248411b8cb8974a1e1c8e43123c1e682fbd64969 to before ea30dc5267e367b8a5e1e06cc074f813bcbf18b2` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.7`
  - unaffected: `before 6.7` (semver)
  - unaffected: `6.12.108 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.49 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.13 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2.3 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 6th percentile, on 14 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 4 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80850](https://www.cve.org/CVERecord?id=CVE-2026-80850)
- [NVD: CVE-2026-80850](https://nvd.nist.gov/vuln/detail/CVE-2026-80850)

### References from the CNA

- <https://git.kernel.org/stable/c/594ba77210a1f065832211851a2d7e14d11fcbdb>
- <https://git.kernel.org/stable/c/70051a57786d5b23f059fbaf5c8241eca14d42ed>
- <https://git.kernel.org/stable/c/284d7fd0eec8774bd6214921fbf525cf907c590e>
- <https://git.kernel.org/stable/c/d17e88b6b60ff4ef64e0dd1444f935cb13dee1cd>
- <https://git.kernel.org/stable/c/ea30dc5267e367b8a5e1e06cc074f813bcbf18b2>

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-2026-80850>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80850/>. Everything for agents: <https://agentprime.io/llms.txt>.