# s390/vfio-ap: Fix hot-unplug skipped when last AP adapter or domain removed

CVE record · `CVE-2026-89957`

- **Identifiers:** `CVE-2026-89957`
- **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 f58e824de8577fe411f6199d659731a0f86a7275` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 3a9b049bbdc40165d7f3e20b818eec95e5694d96` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 753aa3bb1273bc0d36adb013d5915cc8ff6b72a9` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before c45753c32d452d10d8efaeb52587e9e6e8126e33` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 04b35dd88c108b2d2ceaaa396aba1cb4049d5831` (git)
  - affected: `eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 917f509bfb88048094dbb85c4e9dbc4d6fe4a886` (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:** 0.0016, the 5th 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89957](https://www.cve.org/CVERecord?id=CVE-2026-89957)
- [NVD: CVE-2026-89957](https://nvd.nist.gov/vuln/detail/CVE-2026-89957)

### References from the CNA

- <https://git.kernel.org/stable/c/f58e824de8577fe411f6199d659731a0f86a7275>
- <https://git.kernel.org/stable/c/3a9b049bbdc40165d7f3e20b818eec95e5694d96>
- <https://git.kernel.org/stable/c/753aa3bb1273bc0d36adb013d5915cc8ff6b72a9>
- <https://git.kernel.org/stable/c/c45753c32d452d10d8efaeb52587e9e6e8126e33>
- <https://git.kernel.org/stable/c/04b35dd88c108b2d2ceaaa396aba1cb4049d5831>
- <https://git.kernel.org/stable/c/917f509bfb88048094dbb85c4e9dbc4d6fe4a886>

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-2026-89957>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89957/>. Everything for agents: <https://agentprime.io/llms.txt>.