# CVE-2022-24939: Malformed Zigbee packet with invalid destination address causes Assert

> A malformed Zigbee packet with an invalid destination address causes a stack overflow and device reset in the Ember ZNet stack.

- **Severity:** Medium 5.7 (`CVSS:3.1/AV:A/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:** No
- **Published:** 17 Nov 2022
- **Updated:** 29 Apr 2025
- **Also known as:** GHSA-q35w-7696-fc7r

## What is CVE-2022-24939?

CVE-2022-24939 is a medium-severity denial of service vulnerability in silabs.com Ember ZNet, published on 17 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A malformed packet containing an invalid destination address, causes a stack overflow in the Ember ZNet stack. This causes an assert which leads to a reset, immediately clearing the error.

Weakness: CWE-787 (Out-of-bounds Write), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2022-24939?

It affects 2 products.


Products: Silabs Gecko Software Development Kit, Silabs Zigbee Emberznet.

## How do I fix CVE-2022-24939?

No fix has been published for CVE-2022-24939 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24939 being exploited?

There is no known exploitation of CVE-2022-24939 in the wild and no public exploit code.

## Other vulnerabilities in silabs.com Ember ZNet

- [CVE-2023-45318](https://insights.sbomify.com/CVE-2023-45318/): Memory corruption in Gecko Platform (critical 10.0)
- [CVE-2023-2686](https://insights.sbomify.com/CVE-2023-2686/): Memory corruption in Gecko Platform (critical 9.8)
- [CVE-2023-4280](https://insights.sbomify.com/CVE-2023-4280/): Unvalidated input in Silicon Labs TrustZone implementation leads to accessing Trusted memory region (critical 9.3)
- [CVE-2023-4020](https://insights.sbomify.com/CVE-2023-4020/): Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory (critical 9.0)
- [CVE-2023-25181](https://insights.sbomify.com/CVE-2023-25181/): Memory corruption in Cesium NET (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24939 and fix it if it is affected.

What it is: CVE-2022-24939 is a medium-severity denial of service vulnerability in silabs.com Ember ZNet, published on 17 Nov 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-2022-24939 in the wild and no public exploit code.

Affected product: silabs.com Ember ZNet. 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-2022-24939/ (Markdown: https://insights.sbomify.com/CVE-2022-24939/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24939
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24939
- OSV: https://osv.dev/vulnerability/CVE-2022-24939

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24939/
Summaries are generated and may contain mistakes; the official description above is the record.