# LoongArch: KVM: Preserve memslot arch flags on KVM_MR_FLAGS_ONLY

CVE record · `CVE-2026-89908`

- **Identifiers:** `CVE-2026-89908`
- **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: `7ab6fb505b2a7447c4a7237a12c59e3ad0c7298c to before 7c6df65b53846cd7a9a1c81c6ddb42fdc08603e8` (git)
  - affected: `7ab6fb505b2a7447c4a7237a12c59e3ad0c7298c to before 4e4dbc341b1581dc512b85d98b768373b0398366` (git)
  - affected: `7ab6fb505b2a7447c4a7237a12c59e3ad0c7298c to before bc7a6849b4395f45a602db91b0fb2fb2e9ed4bba` (git)
  - affected: `7ab6fb505b2a7447c4a7237a12c59e3ad0c7298c to before 27a9bfee3bbcb3cabb77797354f07e0e44e49831` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.8`
  - unaffected: `before 6.8` (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:** 0.0018, the 7th 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89908](https://www.cve.org/CVERecord?id=CVE-2026-89908)
- [NVD: CVE-2026-89908](https://nvd.nist.gov/vuln/detail/CVE-2026-89908)

### References from the CNA

- <https://git.kernel.org/stable/c/7c6df65b53846cd7a9a1c81c6ddb42fdc08603e8>
- <https://git.kernel.org/stable/c/4e4dbc341b1581dc512b85d98b768373b0398366>
- <https://git.kernel.org/stable/c/bc7a6849b4395f45a602db91b0fb2fb2e9ed4bba>
- <https://git.kernel.org/stable/c/27a9bfee3bbcb3cabb77797354f07e0e44e49831>

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-2026-89908>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89908/>. Everything for agents: <https://agentprime.io/llms.txt>.