CVE-2021-0476

HIGH

Android - Use-After-Free via Race Condition in FindOrCreatePeer

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-0476. PoCs published by nanopathi.

AI-analyzed exploit summary This repository contains the Fluoride Bluetooth stack source code, which is the affected component for CVE-2021-0476. It includes build instructions, documentation, and source files but does not contain an explicit exploit or proof-of-concept code for the vulnerability.

Description

In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-169252501

Exploits (1)

nomisec WRITEUP
by nanopathi · poc
https://github.com/nanopathi/system_bt_AOSP10_r33_CVE-2021-0476

This repository contains the Fluoride Bluetooth stack source code, which is the affected component for CVE-2021-0476. It includes build instructions, documentation, and source files but does not contain an explicit exploit or proof-of-concept code for the vulnerability.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: Fluoride Bluetooth stack (AOSP)
No auth needed
Prerequisites: Access to the Bluetooth stack source code · Knowledge of Bluetooth protocol vulnerabilities
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://source.android.com/security/bulletin/2021-05-01

Scores

CVSS v3 7.0
EPSS 0.0018
EPSS Percentile 8.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-362
Status published
Products (3)
google/android 9.0
google/android 10.0
google/android 11.0
Published Jun 11, 2021
Tracked Since Feb 18, 2026