CVE-2021-39792 : Vulnerability Insights and Analysis

This CVE article discusses a use after free vulnerability in the Android kernel leading to information disclosure.

Understanding CVE-2021-39792

This section provides insights into the impact, technical details, and mitigation strategies for CVE-2021-39792.

What is CVE-2021-39792?

CVE-2021-39792 relates to a use after free out of bounds read vulnerability in the Android kernel, potentially allowing local information disclosure.

The Impact of CVE-2021-39792

The vulnerability could result in local information disclosure with System execution privileges, without requiring user interaction.

Technical Details of CVE-2021-39792

This section delves deeper into the vulnerability's description, affected systems, exploitation mechanism, and prevention methods.

Vulnerability Description

The vulnerability exists in usb_gadget_giveback_request of core.c, caused by a race condition leading to the use after free out of bounds read.

Affected Systems and Versions

Product: Android
Versions: Android kernel

Exploitation Mechanism

The vulnerability stems from a race condition in usb_gadget_giveback_request, enabling local information disclosure.

Mitigation and Prevention

Explore the immediate steps and long-term practices to enhance security against CVE-2021-39792.

Immediate Steps to Take

Implement patches from the upstream kernel

Long-Term Security Practices

Regularly update and patch the Android kernel

Patching and Updates

Stay vigilant for patches and updates to address the CVE-2021-39792 vulnerability.