# CVE-2020-10024: ARM Platform Uses Signed Integer Comparison When Validating Syscall Numbers

> An attacker with code execution in a user thread can escalate privileges to kernel level due to signed integer comparison errors in syscall validation.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/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:** No
- **Published:** 11 May 2020
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-5c78-vcj8-vwr5

## What is CVE-2020-10024?

CVE-2020-10024 is a high-severity vulnerability in Zephyrproject Zephyr, published on 11 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The arm platform-specific code uses a signed integer comparison when validating system call numbers. An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Weakness: CWE-697 (Incorrect Comparison)

## Which versions are affected by CVE-2020-10024?

It affects 1 product.


Products: Zephyrproject Zephyr.

## How do I fix CVE-2020-10024?

No fix has been published for CVE-2020-10024 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-10024 being exploited?

There is no known exploitation of CVE-2020-10024 in the wild and no public exploit code.

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## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-10024 and fix it if it is affected.

What it is: CVE-2020-10024 is a high-severity vulnerability in Zephyrproject Zephyr, published on 11 May 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-2020-10024 in the wild and no public exploit code.

Affected product: Zephyrproject Zephyr. 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-2020-10024/ (Markdown: https://insights.sbomify.com/CVE-2020-10024/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-10024
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-10024
- OSV: https://osv.dev/vulnerability/CVE-2020-10024

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-10024/
Summaries are generated and may contain mistakes; the official description above is the record.