# RISC-V: KVM: Synchronize hrtimer callback during teardown

CVE record · `CVE-2026-98464`

- **Identifiers:** `CVE-2026-98464`
- **State:** Confirmed
- **Severity:** CVSS 9.3 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 24 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:15 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.

## Critical

Critical, because:

- CVSS score 9.3: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `3a9f66cb25e18a3eeca36c08d9f823a35b3ddc22 to before 9bdbae64ae0dab93041ebc57ec4e93def793fc2d` (git)
  - affected: `3a9f66cb25e18a3eeca36c08d9f823a35b3ddc22 to before 2af03b606aadaaeb386658ef798c79bdcdef87c1` (git)
  - affected: `3a9f66cb25e18a3eeca36c08d9f823a35b3ddc22 to before e66aced74f0122380603c9910a71d77618b28f0e` (git)
  - affected: `3a9f66cb25e18a3eeca36c08d9f823a35b3ddc22 to before ea91f05a55b807ead3166546a2c75f4185ca645f` (git)
  - affected: `3a9f66cb25e18a3eeca36c08d9f823a35b3ddc22 to before 3cc6184bd5920c9685d87f4e260568feba08650d` (git)
  - affected: `3a9f66cb25e18a3eeca36c08d9f823a35b3ddc22 to before aaad136d56d91252517272b68cd533e5714698d5` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.16`
  - unaffected: `before 5.16` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd percentile, on 8 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98464](https://www.cve.org/CVERecord?id=CVE-2026-98464)
- [NVD: CVE-2026-98464](https://nvd.nist.gov/vuln/detail/CVE-2026-98464)

### References from the CNA

- <https://git.kernel.org/stable/c/9bdbae64ae0dab93041ebc57ec4e93def793fc2d>
- <https://git.kernel.org/stable/c/2af03b606aadaaeb386658ef798c79bdcdef87c1>
- <https://git.kernel.org/stable/c/e66aced74f0122380603c9910a71d77618b28f0e>
- <https://git.kernel.org/stable/c/ea91f05a55b807ead3166546a2c75f4185ca645f>
- <https://git.kernel.org/stable/c/3cc6184bd5920c9685d87f4e260568feba08650d>
- <https://git.kernel.org/stable/c/aaad136d56d91252517272b68cd533e5714698d5>

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-2026-98464>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98464/>. Everything for agents: <https://agentprime.io/llms.txt>.