# KVM: s390: pci: Fix NULL dereference on AIBV allocation failure

CVE record · `CVE-2026-80684`

- **Identifiers:** `CVE-2026-80684`
- **State:** Confirmed
- **Severity:** CVSS 9.3 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 28 Aug 2026
- **Updated:** 16 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 28 Aug 2026, 06:52 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 9.3: 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: `3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc to before 96099486b63985801c9c6ef22505e9aa635b2d20` (git)
  - affected: `3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc to before 0a95abe964400771ad82b027d7b84a0d183cd0db` (git)
  - affected: `3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc to before df947d85e164a50a29d43a96e814f69ab1d0f7ed` (git)
  - affected: `3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc to before e137d082325bbcae780087b57501d38585e625d9` (git)
  - affected: `3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc to before d1a103dc9016c25e7423ce5841a5cc2df76d59f3` (git)
  - affected: `3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc to before 8bf09b9b7d3232806df95f409581f8a9fd99a3fa` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.0`
  - unaffected: `before 6.0` (semver)
  - unaffected: `6.1.183 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.151 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.103 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.44 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.8 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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

- 9.3 Critical, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd percentile, on 15 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 28 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80684](https://www.cve.org/CVERecord?id=CVE-2026-80684)
- [NVD: CVE-2026-80684](https://nvd.nist.gov/vuln/detail/CVE-2026-80684)

### References from the CNA

- <https://git.kernel.org/stable/c/96099486b63985801c9c6ef22505e9aa635b2d20>
- <https://git.kernel.org/stable/c/0a95abe964400771ad82b027d7b84a0d183cd0db>
- <https://git.kernel.org/stable/c/df947d85e164a50a29d43a96e814f69ab1d0f7ed>
- <https://git.kernel.org/stable/c/e137d082325bbcae780087b57501d38585e625d9>
- <https://git.kernel.org/stable/c/d1a103dc9016c25e7423ce5841a5cc2df76d59f3>
- <https://git.kernel.org/stable/c/8bf09b9b7d3232806df95f409581f8a9fd99a3fa>

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-2026-80684>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80684/>. Everything for agents: <https://agentprime.io/llms.txt>.