# net/smc: do not dereference an unset send buffer on the SMC-D teardown path

CVE record · `CVE-2026-80984`

- **Identifiers:** `CVE-2026-80984`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **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.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `21f6f41e82e59740e26e06e77bdf58dc7f6f08dd to before ab26e12dd5d2f43d939fcf456933a816e81d2e51` (git)
  - affected: `ae2be35cbed2c8385e890147ea321a3fcc3ca5fa to before e3fcff8d22a6c9540748846cd800443a643553a6` (git)
  - affected: `ae2be35cbed2c8385e890147ea321a3fcc3ca5fa to before f950e1b1f0aad334f9a9ee552c4dd5b794ebdd45` (git)
  - affected: `ae2be35cbed2c8385e890147ea321a3fcc3ca5fa to before f517cf02033801a28f98d86ca613a3533cf066b3` (git)
  - affected: `ae2be35cbed2c8385e890147ea321a3fcc3ca5fa to before b395dd319cea422239cb45b998fb38d7e373af87` (git)
  - affected: `6.6.66 to before 6.6.157` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.10`
  - unaffected: `before 6.10` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th 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-2026-80984](https://www.cve.org/CVERecord?id=CVE-2026-80984)
- [NVD: CVE-2026-80984](https://nvd.nist.gov/vuln/detail/CVE-2026-80984)

### References from the CNA

- <https://git.kernel.org/stable/c/ab26e12dd5d2f43d939fcf456933a816e81d2e51>
- <https://git.kernel.org/stable/c/e3fcff8d22a6c9540748846cd800443a643553a6>
- <https://git.kernel.org/stable/c/f950e1b1f0aad334f9a9ee552c4dd5b794ebdd45>
- <https://git.kernel.org/stable/c/f517cf02033801a28f98d86ca613a3533cf066b3>
- <https://git.kernel.org/stable/c/b395dd319cea422239cb45b998fb38d7e373af87>

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-2026-80984>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80984/>. Everything for agents: <https://agentprime.io/llms.txt>.