# net/smc: fix socket refcount leak in smc_switch_conns()

CVE record · `CVE-2026-80983`

- **Identifiers:** `CVE-2026-80983`
- **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:** 30 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: `99f19566b1c4d3dc4d934ee2ef43faadebb56d70 to before 8cb289eb764ff18000a33ddbc287d676d8597eea` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before a3378466704e0bbe93aef9769552dca7673a7eb6` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before e20227019d9da73f8fdf16f0951c2e188c84933f` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before 09d7a9e162ee1a269878c126aee3d7eff43e4130` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before 84dea0585f6b538ae895a8b1d025f4897737f3b1` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before d89dc1bd8845c669a700eee58c64ebd3cc1b6d2d` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before d9a879ac25958bdaecb669ce70e58f8e2ff170de` (git)
  - affected: `95f7f3e7dc6bd2e735cb5de11734ea2222b1e05a to before 719296c4aa8213d4ac8002e77d5956d436bc98d0` (git)
  - affected: `0d9ddf515cde793841f738490037560fd6559c63` (git)
  - affected: `5.10.90 to before 5.10.273` (semver)
  - affected: `5.14.14 to before 5.15` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.15`
  - unaffected: `before 5.15` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (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:** 0.0018, the 7th 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-2026-80983](https://www.cve.org/CVERecord?id=CVE-2026-80983)
- [NVD: CVE-2026-80983](https://nvd.nist.gov/vuln/detail/CVE-2026-80983)

### References from the CNA

- <https://git.kernel.org/stable/c/8cb289eb764ff18000a33ddbc287d676d8597eea>
- <https://git.kernel.org/stable/c/a3378466704e0bbe93aef9769552dca7673a7eb6>
- <https://git.kernel.org/stable/c/e20227019d9da73f8fdf16f0951c2e188c84933f>
- <https://git.kernel.org/stable/c/09d7a9e162ee1a269878c126aee3d7eff43e4130>
- <https://git.kernel.org/stable/c/84dea0585f6b538ae895a8b1d025f4897737f3b1>
- <https://git.kernel.org/stable/c/d89dc1bd8845c669a700eee58c64ebd3cc1b6d2d>
- <https://git.kernel.org/stable/c/d9a879ac25958bdaecb669ce70e58f8e2ff170de>
- <https://git.kernel.org/stable/c/719296c4aa8213d4ac8002e77d5956d436bc98d0>

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-2026-80983>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80983/>. Everything for agents: <https://agentprime.io/llms.txt>.