CVE-2021-1042 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2021-1042, a vulnerability in the Android kernel that could lead to local information disclosure without the need for user interaction.

Understanding CVE-2021-1042

CVE-2021-1042 is a vulnerability found in dsi_panel_debugfs_read_cmdset of dsi_panel.c in the Android kernel. The issue allows an attacker to disclose freed kernel heap memory leading to potential local information disclosure.

What is CVE-2021-1042?

The CVE-2021-1042 vulnerability involves a use after free scenario in the Android kernel, potentially exposing sensitive information without requiring user interaction.

The Impact of CVE-2021-1042

The impact of CVE-2021-1042 is the disclosure of freed kernel heap memory, allowing malicious actors to access local information with System execution privileges.

Technical Details of CVE-2021-1042

CVE-2021-1042 stems from a use after free vulnerability in dsi_panel_debugfs_read_cmdset of dsi_panel.c within the Android kernel, leading to a disclosure of freed kernel heap memory.

Vulnerability Description

The vulnerability in dsi_panel_debugfs_read_cmdset can be exploited to disclose sensitive kernel heap memory, resulting in local information disclosure.

Affected Systems and Versions

The affected product is Android with the Android kernel version being vulnerable to the CVE-2021-1042 disclosure issue.

Exploitation Mechanism

Exploitation of CVE-2021-1042 does not require user interaction, making it easier for attackers to leverage the vulnerability for local information disclosure.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-1042, users are advised to take immediate steps to secure their systems and implement long-term security practices.

Immediate Steps to Take

Users should monitor official sources for security patches and updates related to the Android kernel to address the CVE-2021-1042 vulnerability promptly.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and staying informed about the latest security advisories can help prevent similar vulnerabilities like CVE-2021-1042.

Patching and Updates

Regularly applying security patches released by the Android platform is crucial to address vulnerabilities like CVE-2021-1042 and maintain a secure system environment.