# KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()

CVE record · `CVE-2026-98283`

- **Identifiers:** `CVE-2026-98283`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:45 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: `e3b6b4661527e821ffbe3db83952fdb1e6e47c49 to before 4d8f7b1f586375df8bce23a0909566ad5e852259` (git)
  - affected: `e3b6b4661527e821ffbe3db83952fdb1e6e47c49 to before e37fba1ba69385cff2d0e60b371ee19e7d1852d1` (git)
  - affected: `e3b6b4661527e821ffbe3db83952fdb1e6e47c49 to before 24b634852413229bb8340d908b115c3365f3a247` (git)
  - affected: `e3b6b4661527e821ffbe3db83952fdb1e6e47c49 to before fbf69b7d0555ee83c871f58750770f74b7179ad1` (git)
  - affected: `e3b6b4661527e821ffbe3db83952fdb1e6e47c49 to before ec2d7a52b3996ae81131617b4afc0af31583c1b4` (git)
  - affected: `e3b6b4661527e821ffbe3db83952fdb1e6e47c49 to before 51938dfa8a51a4f85328413fca9b6e21f9d2d088` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.20`
  - unaffected: `before 4.20` (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: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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:** 0.0013, the 2nd percentile, on 11 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98283](https://www.cve.org/CVERecord?id=CVE-2026-98283)
- [NVD: CVE-2026-98283](https://nvd.nist.gov/vuln/detail/CVE-2026-98283)

### References from the CNA

- <https://git.kernel.org/stable/c/4d8f7b1f586375df8bce23a0909566ad5e852259>
- <https://git.kernel.org/stable/c/e37fba1ba69385cff2d0e60b371ee19e7d1852d1>
- <https://git.kernel.org/stable/c/24b634852413229bb8340d908b115c3365f3a247>
- <https://git.kernel.org/stable/c/fbf69b7d0555ee83c871f58750770f74b7179ad1>
- <https://git.kernel.org/stable/c/ec2d7a52b3996ae81131617b4afc0af31583c1b4>
- <https://git.kernel.org/stable/c/51938dfa8a51a4f85328413fca9b6e21f9d2d088>

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-2026-98283>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98283/>. Everything for agents: <https://agentprime.io/llms.txt>.