# i3c: master: svc: bound IBI payload to the requested max_payload_len

CVE record · `CVE-2026-80951`

- **Identifiers:** `CVE-2026-80951`
- **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: `dd3c52846d5954acd43f0e771689302f27dadc28 to before 7c099b0b292a68d0ef558527945dbfb756fbf893` (git)
  - affected: `dd3c52846d5954acd43f0e771689302f27dadc28 to before 7cc5ba756bc1cfffab9cb2695742f9f479dc73f7` (git)
  - affected: `dd3c52846d5954acd43f0e771689302f27dadc28 to before 35aa6730b8c5626b879a4e893fe664f59bf07d7f` (git)
  - affected: `dd3c52846d5954acd43f0e771689302f27dadc28 to before f296a0d5907bf88314dfda67245f7f69d1552470` (git)
  - affected: `dd3c52846d5954acd43f0e771689302f27dadc28 to before 5697d779577e2786ff3348ae9b77020ac0cf0aab` (git)
  - affected: `dd3c52846d5954acd43f0e771689302f27dadc28 to before aac3c5aababc7fb69d5bf5b0cc52d308574e3a8c` (git)
  - affected: `dd3c52846d5954acd43f0e771689302f27dadc28 to before e2bda39d7f9f285ec803e200b5c1f17143d0b483` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.12`
  - unaffected: `before 5.12` (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:** 0.0021, the 11th 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-2026-80951](https://www.cve.org/CVERecord?id=CVE-2026-80951)
- [NVD: CVE-2026-80951](https://nvd.nist.gov/vuln/detail/CVE-2026-80951)

### References from the CNA

- <https://git.kernel.org/stable/c/7c099b0b292a68d0ef558527945dbfb756fbf893>
- <https://git.kernel.org/stable/c/7cc5ba756bc1cfffab9cb2695742f9f479dc73f7>
- <https://git.kernel.org/stable/c/35aa6730b8c5626b879a4e893fe664f59bf07d7f>
- <https://git.kernel.org/stable/c/f296a0d5907bf88314dfda67245f7f69d1552470>
- <https://git.kernel.org/stable/c/5697d779577e2786ff3348ae9b77020ac0cf0aab>
- <https://git.kernel.org/stable/c/aac3c5aababc7fb69d5bf5b0cc52d308574e3a8c>
- <https://git.kernel.org/stable/c/e2bda39d7f9f285ec803e200b5c1f17143d0b483>

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-2026-80951>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80951/>. Everything for agents: <https://agentprime.io/llms.txt>.