# CVE-2018-5820: Integer overflow in Android for MSM, Firefox OS for MSM, QRD Android

> An integer overflow in the Qualcomm Android kernel allows heap overwrites via firmware parameters, potentially enabling code execution.

- **Severity:** High 7.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Apr 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-xg69-fr7r-wmjm

## What is CVE-2018-5820?

CVE-2018-5820 is a high-severity vulnerability in Google Android, published on 3 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In Qualcomm Android for MSM, Firefox OS for MSM, and QRD Android with all Android releases from CAF using the Linux kernel before security patch level 2018-04-05, in the function wma_tbttoffset_update_event_handler(), a parameter received from firmware is used to allocate memory for a local buffer and is not properly validated. This can potentially result in an integer overflow subsequently leading to a heap overwrite.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2018-5820?

It affects 1 product.


Products: Google Android.

## How do I fix CVE-2018-5820?

No fix has been published for CVE-2018-5820 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5820 being exploited?

There is no known exploitation of CVE-2018-5820 in the wild and no public exploit code.

## Other vulnerabilities in Google Android

- [CVE-2026-58704](https://insights.sbomify.com/CVE-2026-58704/): Google Pixel Improper Authorization (high 8.8, exploited in the wild)
- [CVE-2025-48543](https://insights.sbomify.com/CVE-2025-48543/): Android Runtime Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2023-35674](https://insights.sbomify.com/CVE-2023-35674/): Android Framework Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2025-48595](https://insights.sbomify.com/CVE-2025-48595/): Android Framework Integer Overflow (high 8.4, exploited in the wild)
- [CVE-2024-32896](https://insights.sbomify.com/CVE-2024-32896/): Android Pixel Privilege Escalation (high 8.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5820 and fix it if it is affected.

What it is: CVE-2018-5820 is a high-severity vulnerability in Google Android, published on 3 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-5820 in the wild and no public exploit code.

Affected product: Google 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-2018-5820/ (Markdown: https://insights.sbomify.com/CVE-2018-5820/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5820
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5820
- OSV: https://osv.dev/vulnerability/CVE-2018-5820

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5820/
Summaries are generated and may contain mistakes; the official description above is the record.