# CVE-2018-9423: Denial of service in Android

> An out-of-bounds read in the Android video decoder allows attackers to cause a denial of service via crafted media files requiring user interaction.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:** No
- **Published:** 2 Dec 2024
- **Updated:** 3 Dec 2024
- **Also known as:** GHSA-8ggj-85qv-ffm2

## What is CVE-2018-9423?

CVE-2018-9423 is a medium-severity denial of service vulnerability in Google Android, published on 2 Dec 2024. 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 ihevcd_parse_slice_header of ihevcd_parse_slice_header.c there is a possible out of bound read due to missing bounds check. This could lead to denial of service with no additional execution privileges needed. User interaction is needed for exploitation.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2018-9423?

It affects 1 product.


Products: Google Android.

## How do I fix CVE-2018-9423?

No fix has been published for CVE-2018-9423 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-9423 being exploited?

There is no known exploitation of CVE-2018-9423 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-2018-9423 and fix it if it is affected.

What it is: CVE-2018-9423 is a medium-severity denial of service vulnerability in Google Android, published on 2 Dec 2024. 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-2018-9423 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-2018-9423/ (Markdown: https://insights.sbomify.com/CVE-2018-9423/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-9423
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-9423
- OSV: https://osv.dev/vulnerability/CVE-2018-9423

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-9423/
Summaries are generated and may contain mistakes; the official description above is the record.