# CVE-2019-13104: Integer overflow in n/a

> An integer underflow in U-Boot's ext4 filesystem handler allows attackers to overwrite memory via a crafted filesystem, potentially leading to code execution or system crash.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 6 Aug 2019
- **Updated:** 12 May 2026
- **Also known as:** DEBIAN-CVE-2019-13104, GHSA-rf5j-jvr6-2g8r, UBUNTU-CVE-2019-13104

## What is CVE-2019-13104?

CVE-2019-13104 is a high-severity vulnerability in Opensuse Leap, published on 6 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy() to overwrite a very large amount of data (including the whole stack) while reading a crafted ext4 filesystem.

Weakness: CWE-787 (Out-of-bounds Write), CWE-191 (Integer Underflow (Wrap or Wraparound))

## Which versions are affected by CVE-2019-13104?

It affects 2 products.


Products: Denx U-Boot, Opensuse Leap.

## How do I fix CVE-2019-13104?

Apply the vendor's patch.

## Is CVE-2019-13104 being exploited?

There is no known exploitation of CVE-2019-13104 in the wild and no public exploit code.

## Other vulnerabilities in Opensuse Leap

- [CVE-2022-34835](https://insights.sbomify.com/CVE-2022-34835/): Integer overflow in n/a (critical 9.8)
- [CVE-2022-30767](https://insights.sbomify.com/CVE-2022-30767/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-8432](https://insights.sbomify.com/CVE-2020-8432/): Use after free in n/a (critical 9.8)
- [CVE-2019-14192](https://insights.sbomify.com/CVE-2019-14192/): Integer overflow in n/a (critical 9.8)
- [CVE-2019-14193](https://insights.sbomify.com/CVE-2019-14193/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13104 and fix it if it is affected.

What it is: CVE-2019-13104 is a high-severity vulnerability in Opensuse Leap, published on 6 Aug 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-13104 in the wild and no public exploit code.

Affected product: Opensuse Leap. 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-2019-13104/ (Markdown: https://insights.sbomify.com/CVE-2019-13104/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13104
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13104
- OSV: https://osv.dev/vulnerability/CVE-2019-13104

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13104/
Summaries are generated and may contain mistakes; the official description above is the record.