# CVE-2018-12207: Denial of service in 2019.2 IPU – Intel(R) Processor Machine Check Error

> An authenticated local user can cause a denial of service on the host system via improper page table invalidation in Intel processors.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Nov 2019
- **Updated:** 5 Aug 2024
- **Also known as:** ALPINE-CVE-2018-12207, DEBIAN-CVE-2018-12207, GHSA-mgp4-7j8w-x48q, UBUNTU-CVE-2018-12207

## What is CVE-2018-12207?

CVE-2018-12207 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 14 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R) Processors may allow an authenticated user to potentially enable denial of service of the host system via local access.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-12207?

It affects 778 products.


Products: Canonical Ubuntu Linux, Debian Debian Linux, F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Domain Name System, F5 Big-Ip Fraud Protection Service, F5 Big-Ip Global Traffic Manager, F5 Big-Ip Link Controller, F5 Big-Ip Local Traffic Manager, F5 Big-Ip Policy Enforcement Manager, F5 Big-Iq Centralized Management, F5 Enterprise Manager, Fedoraproject Fedora, Intel Celeron G1610 Firmware, Intel Celeron G1610t Firmware, Intel Celeron G1620 Firmware, Intel Celeron G1620t Firmware and 758 more.

## How do I fix CVE-2018-12207?

Apply the vendor's patch.

## Is CVE-2018-12207 being exploited?

There is no known exploitation of CVE-2018-12207 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-12207 and fix it if it is affected.

What it is: CVE-2018-12207 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 14 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-12207 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-12207/ (Markdown: https://insights.sbomify.com/CVE-2018-12207/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-12207
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-12207
- OSV: https://osv.dev/vulnerability/CVE-2018-12207

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-12207/
Summaries are generated and may contain mistakes; the official description above is the record.