# KVM: s390: Fix memory leak in guest debug handling

CVE record · `CVE-2026-89925`

- **Identifiers:** `CVE-2026-89925`
- **State:** Confirmed
- **Severity:** No CVSS score
- **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: `27291e2165b6de70c476b7b675308113edd69a60 to before 39e7cebb889839b5762c9ad22e2d715b5883b288` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before 58b1b729a9f90c80b508fc3e2174cbc0ee50859e` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before 9071f75cbde3bf46119cb28e92cfbef830c4bf97` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before 5940418e4232a2ff1d30ba12e0d213dbf48f0a83` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before fc2034c431adcbaabf5f8a01912358f07355349e` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before 44bf3792c10f4bb3de507391f1837e020d92eaa2` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before 581be9f6085834188cef1ad2f07babf3b421e409` (git)
  - affected: `27291e2165b6de70c476b7b675308113edd69a60 to before 121ea1de927c8b9bfdf53c31cad27b86d5de0293` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.16`
  - unaffected: `before 3.16` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (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: `6.12.110 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th 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-2026-89925](https://www.cve.org/CVERecord?id=CVE-2026-89925)
- [NVD: CVE-2026-89925](https://nvd.nist.gov/vuln/detail/CVE-2026-89925)

### References from the CNA

- <https://git.kernel.org/stable/c/39e7cebb889839b5762c9ad22e2d715b5883b288>
- <https://git.kernel.org/stable/c/58b1b729a9f90c80b508fc3e2174cbc0ee50859e>
- <https://git.kernel.org/stable/c/9071f75cbde3bf46119cb28e92cfbef830c4bf97>
- <https://git.kernel.org/stable/c/5940418e4232a2ff1d30ba12e0d213dbf48f0a83>
- <https://git.kernel.org/stable/c/fc2034c431adcbaabf5f8a01912358f07355349e>
- <https://git.kernel.org/stable/c/44bf3792c10f4bb3de507391f1837e020d92eaa2>
- <https://git.kernel.org/stable/c/581be9f6085834188cef1ad2f07babf3b421e409>
- <https://git.kernel.org/stable/c/121ea1de927c8b9bfdf53c31cad27b86d5de0293>

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-2026-89925>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89925/>. Everything for agents: <https://agentprime.io/llms.txt>.