# CVE-2024-10239: fld->used_bytes without sanity check causes stack overflow

> An administrator can trigger a stack overflow in Supermicro firmware by uploading a crafted image, potentially causing denial of service or code execution.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Feb 2025
- **Updated:** 4 Feb 2025
- **Also known as:** GHSA-4wqc-fqvf-wh8w

## What is CVE-2024-10239?

CVE-2024-10239 is a high-severity memory corruption vulnerability in SMCI MBD-X12DPG-OA6, published on 4 Feb 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A security issue in the firmware image verification implementation at Supermicro MBD-X12DPG-OA6 . An attacker with administrator privileges can upload a specially crafted image, which can cause a stack overflow due to the unchecked fat->fsd.max_fld.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-10239?


## How do I fix CVE-2024-10239?

No fix has been published for CVE-2024-10239 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-10239 being exploited?

There is no known exploitation of CVE-2024-10239 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-10239 and fix it if it is affected.

What it is: CVE-2024-10239 is a high-severity memory corruption vulnerability in SMCI MBD-X12DPG-OA6, published on 4 Feb 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-10239 in the wild and no public exploit code.

Affected product: SMCI MBD-X12DPG-OA6. 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-2024-10239/ (Markdown: https://insights.sbomify.com/CVE-2024-10239/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-10239
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-10239
- OSV: https://osv.dev/vulnerability/CVE-2024-10239

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-10239/
Summaries are generated and may contain mistakes; the official description above is the record.