# PCI: Allow per function PCI slots to fix slot reset on s390

CVE record · `CVE-2026-89795`

- **Identifiers:** `CVE-2026-89795`
- **State:** Confirmed
- **Severity:** CVSS 8.4 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:30 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: `44510d6fa0c00aa90b80075caa6b313b25927475 to before afdd497ca3836eda13530ab75b416d52f6d6129a` (git)
  - affected: `44510d6fa0c00aa90b80075caa6b313b25927475 to before b4a80e9e639cf09ef5c66b7f262c9cb5ab37bdde` (git)
  - affected: `44510d6fa0c00aa90b80075caa6b313b25927475 to before 0d1a7d67f45645106578d65181e4e492dd20ed79` (git)
  - affected: `44510d6fa0c00aa90b80075caa6b313b25927475 to before 2050d900f9adbd6d6f38d30e182bcd9ad3108467` (git)
  - affected: `44510d6fa0c00aa90b80075caa6b313b25927475 to before ecdcceed4d377b02d4ea036b65f83f962c38ede7` (git)
  - affected: `44510d6fa0c00aa90b80075caa6b313b25927475 to before dcc5bec09e23bbc4f9de055a11fce9937244f2c8` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.8`
  - unaffected: `before 5.8` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 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

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The Linux kernel from 5.8 up to the fixed releases is affected, in the s390 PCI hotplug slot reset path. The source gives few details on what an attacker needs, but says that resetting one function on a multifunction device can reset the wrong function and that memory is leaked. Upgrade to 6.1.191, 6.6.160, 6.12.112, 6.18.52, or a later release in those series.

Written 12 Nov 2026.

## 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

- 8.4 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/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-2026-89795](https://www.cve.org/CVERecord?id=CVE-2026-89795)
- [NVD: CVE-2026-89795](https://nvd.nist.gov/vuln/detail/CVE-2026-89795)

### References from the CNA

- <https://git.kernel.org/stable/c/afdd497ca3836eda13530ab75b416d52f6d6129a>
- <https://git.kernel.org/stable/c/b4a80e9e639cf09ef5c66b7f262c9cb5ab37bdde>
- <https://git.kernel.org/stable/c/0d1a7d67f45645106578d65181e4e492dd20ed79>
- <https://git.kernel.org/stable/c/2050d900f9adbd6d6f38d30e182bcd9ad3108467>
- <https://git.kernel.org/stable/c/ecdcceed4d377b02d4ea036b65f83f962c38ede7>
- <https://git.kernel.org/stable/c/dcc5bec09e23bbc4f9de055a11fce9937244f2c8>

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-2026-89795>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89795/>. Everything for agents: <https://agentprime.io/llms.txt>.