# s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove

CVE record · `CVE-2026-89959`

- **Identifiers:** `CVE-2026-89959`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:32 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: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 12871a4269f139221c9fde9ea3eb69c9228f59d4` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 02e72909453dee2f8a09f78819f9a9cb902dfbdc` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 4bffadde7fc49b00493fb78c6376f958998d4b8c` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before f7d66afc34bc6e833c8ebe56973afec35f473bc1` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 2ff68bf414de167bc138e6e211ee1ad3ab3c5052` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 6b8a02e216f6b520cc029e43ddc83956605135d5` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.0`
  - unaffected: `before 6.0` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 13 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89959](https://www.cve.org/CVERecord?id=CVE-2026-89959)
- [NVD: CVE-2026-89959](https://nvd.nist.gov/vuln/detail/CVE-2026-89959)

### References from the CNA

- <https://git.kernel.org/stable/c/12871a4269f139221c9fde9ea3eb69c9228f59d4>
- <https://git.kernel.org/stable/c/02e72909453dee2f8a09f78819f9a9cb902dfbdc>
- <https://git.kernel.org/stable/c/4bffadde7fc49b00493fb78c6376f958998d4b8c>
- <https://git.kernel.org/stable/c/f7d66afc34bc6e833c8ebe56973afec35f473bc1>
- <https://git.kernel.org/stable/c/2ff68bf414de167bc138e6e211ee1ad3ab3c5052>
- <https://git.kernel.org/stable/c/6b8a02e216f6b520cc029e43ddc83956605135d5>

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-2026-89959>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89959/>. Everything for agents: <https://agentprime.io/llms.txt>.