# CVE-2021-0127: Denial of service in Intel(R) Processors

> An authenticated local user can cause a denial of service on Intel processors due to insufficient control flow management.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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:** 9 Feb 2022
- **Updated:** 5 May 2025
- **Also known as:** ALPINE-CVE-2021-0127, DEBIAN-CVE-2021-0127, GHSA-mqcr-p73p-f4gw, UBUNTU-CVE-2021-0127

## What is CVE-2021-0127?

CVE-2021-0127 is a medium-severity denial of service vulnerability in Netapp Clustered Data Ontap, published on 9 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a denial of service via local access.

## Which versions are affected by CVE-2021-0127?

It affects 755 products.


Products: Intel Celeron G1610, Intel Celeron G1610t, Intel Celeron G1620, Intel Celeron G1620t, Intel Celeron G1630, Intel Celeron G1820, Intel Celeron G1820t, Intel Celeron G1820te, Intel Celeron G1830, Intel Celeron G3930e, Intel Celeron G3930te, Intel Core I3-1000g1, Intel Core I3-1000g4, Intel Core I3-1005g1, Intel Core I3-10100, Intel Core I3-10100e, Intel Core I3-10100f, Intel Core I3-10100t, Intel Core I3-10100te, Intel Core I3-10100y and 735 more.

## How do I fix CVE-2021-0127?

Apply the vendor's patch.

## Is CVE-2021-0127 being exploited?

There is no known exploitation of CVE-2021-0127 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-0127 and fix it if it is affected.

What it is: CVE-2021-0127 is a medium-severity denial of service vulnerability in Netapp Clustered Data Ontap, published on 9 Feb 2022. 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-2021-0127 in the wild and no public exploit code.

Affected product: Netapp Clustered Data Ontap. 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-2021-0127/ (Markdown: https://insights.sbomify.com/CVE-2021-0127/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-0127
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-0127
- OSV: https://osv.dev/vulnerability/CVE-2021-0127

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-0127/
Summaries are generated and may contain mistakes; the official description above is the record.