# CVE-2024-20849: Memory corruption in Samsung Mobile Devices

> Local attackers can execute arbitrary code via an out-of-bounds write in the libsdffextractor chunk parsing implementation on Samsung mobile devices.

- **Severity:** High 7.3 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Apr 2024
- **Updated:** 27 Aug 2024
- **Also known as:** GHSA-6wpm-mvc7-c878

## What is CVE-2024-20849?

CVE-2024-20849 is a high-severity memory corruption vulnerability in Samsung Android, published on 2 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Out-of-bound Write vulnerability in chunk parsing implementation of libsdffextractor prior to SMR Apr-2023 Release 1 allows local attackers to execute arbitrary code.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2024-20849?

It affects 1 product.


Products: Samsung Android.

## How do I fix CVE-2024-20849?

No fix has been published for CVE-2024-20849 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-20849 being exploited?

There is no known exploitation of CVE-2024-20849 in the wild and no public exploit code.

## Other vulnerabilities in Samsung Android

- [CVE-2025-21042](https://insights.sbomify.com/CVE-2025-21042/): Samsung Mobile Devices Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2025-21043](https://insights.sbomify.com/CVE-2025-21043/): Samsung Mobile Devices Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2021-25487](https://insights.sbomify.com/CVE-2021-25487/): Samsung Mobile Devices Out-of-Bounds Read (high 7.3, exploited in the wild)
- [CVE-2021-25394](https://insights.sbomify.com/CVE-2021-25394/): Samsung Mobile Devices Race Condition (medium 6.4, exploited in the wild)
- [CVE-2021-25395](https://insights.sbomify.com/CVE-2021-25395/): Samsung Mobile Devices Race Condition (medium 6.4, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-20849 and fix it if it is affected.

What it is: CVE-2024-20849 is a high-severity memory corruption vulnerability in Samsung Android, published on 2 Apr 2024. 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-2024-20849 in the wild and no public exploit code.

Affected product: Samsung Android. 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-2024-20849/ (Markdown: https://insights.sbomify.com/CVE-2024-20849/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-20849
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-20849
- OSV: https://osv.dev/vulnerability/CVE-2024-20849

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-20849/
Summaries are generated and may contain mistakes; the official description above is the record.