CVE-2022-20409

MEDIUM

Android - Use-After-Free in io_uring io_identity_cow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2022-20409. PoCs published by Markakd.

AI-analyzed exploit summary This repository contains a working exploit for CVE-2022-20409, targeting Android kernels via a vulnerability in the IO_uring subsystem. The exploit includes device-specific builds for Pixel 6 and Samsung S22, along with tools to extract kernel symbols for porting to other devices.

Description

In io_identity_cow of io_uring.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-238177383References: Upstream kernel

Exploits (1)

nomisec WORKING POC 201 stars
by Markakd · poc
https://github.com/Markakd/bad_io_uring

This repository contains a working exploit for CVE-2022-20409, targeting Android kernels via a vulnerability in the IO_uring subsystem. The exploit includes device-specific builds for Pixel 6 and Samsung S22, along with tools to extract kernel symbols for porting to other devices.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Linux kernel (Android) with IO_uring support, specifically tested on Pixel 6 (5.10.66-android12-9) and Samsung S22
No auth needed
Prerequisites: Android NDK · factory image for target device · ADB access to the device · kernel symbol extraction
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2

Scores

CVSS v3 6.7
EPSS 0.0056
EPSS Percentile 42.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (1)
google/android
Published Oct 11, 2022
Tracked Since Feb 18, 2026