# CVE-2020-8694: Information disclosure in Intel(R) Processors

> An authenticated local user can exploit insufficient access control in the Intel processor kernel driver to disclose sensitive information.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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:** 12 Nov 2020
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2020-8694, DEBIAN-CVE-2020-8694, GHSA-vf5j-54pj-5cc2, UBUNTU-CVE-2020-8694, USN-4627-1

## What is CVE-2020-8694?

CVE-2020-8694 is a medium-severity vulnerability in Intel(R) Processors, published on 12 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Insufficient access control in the Linux kernel driver for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

## Which versions are affected by CVE-2020-8694?

It affects 299 products.


Products: Intel Celeron 3855u Firmware, Intel Celeron 3865u Firmware, Intel Celeron 3955u Firmware, Intel Celeron 3965u Firmware, Intel Celeron 3965y Firmware, Intel Celeron G3900 Firmware, Intel Celeron G3900e Firmware, Intel Celeron G3900t Firmware, Intel Celeron G3900te Firmware, Intel Celeron G3902e Firmware, Intel Celeron G3920 Firmware, Intel Celeron G3920t Firmware, Intel Celeron G3930e Firmware, Intel Celeron G3930te Firmware, Intel Celeron G3940 Firmware, Intel Celeron G4900 Firmware, Intel Celeron G4900t Firmware, Intel Celeron G4920 Firmware, Intel Celeron J4005 Firmware, Intel Celeron J4025 Firmware and 279 more.

## How do I fix CVE-2020-8694?

Apply the vendor's patch.

## Is CVE-2020-8694 being exploited?

There is no known exploitation of CVE-2020-8694 in the wild and no public exploit code.

Public exploit code:

- Let Task Manager TMOG read RAPL power on Linux only while it runs — no permanent udev grant (CVE-2020-8694) (github_poc): https://github.com/kcherry497/tmog-rapl-gate

## Other vulnerabilities in Intel(R) Processors

- [CVE-2020-0548](https://insights.sbomify.com/CVE-2020-0548/): Information disclosure in Intel(R) Processors (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8694 and fix it if it is affected.

What it is: CVE-2020-8694 is a medium-severity vulnerability in Intel(R) Processors, published on 12 Nov 2020. 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-2020-8694 in the wild and no public exploit code.

Affected product: Intel(R) Processors. 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-2020-8694/ (Markdown: https://insights.sbomify.com/CVE-2020-8694/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8694
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8694
- OSV: https://osv.dev/vulnerability/CVE-2020-8694

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8694/
Summaries are generated and may contain mistakes; the official description above is the record.