# net/smc: bound the peer rkey counts in SMC-Rv2 LLC messages

CVE record · `CVE-2026-80986`

- **Identifiers:** `CVE-2026-80986`
- **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:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 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: `27ef6a9981fe74191849966a6d5e0400a4008ab8 to before 486c699a8cde82c1d9b4f443eeab4ddf86358cb0` (git)
  - affected: `27ef6a9981fe74191849966a6d5e0400a4008ab8 to before 5e5d9e6df677d30a2203d257b5fd8b99814fa607` (git)
  - affected: `27ef6a9981fe74191849966a6d5e0400a4008ab8 to before 2d1e7c5aaa3326e95e2058457f172ca99a9a4577` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.14`
  - unaffected: `before 6.14` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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

- 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:** 0.0065, the 51st 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80986](https://www.cve.org/CVERecord?id=CVE-2026-80986)
- [NVD: CVE-2026-80986](https://nvd.nist.gov/vuln/detail/CVE-2026-80986)

### References from the CNA

- <https://git.kernel.org/stable/c/486c699a8cde82c1d9b4f443eeab4ddf86358cb0>
- <https://git.kernel.org/stable/c/5e5d9e6df677d30a2203d257b5fd8b99814fa607>
- <https://git.kernel.org/stable/c/2d1e7c5aaa3326e95e2058457f172ca99a9a4577>

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-2026-80986>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80986/>. Everything for agents: <https://agentprime.io/llms.txt>.