CVE-2021-39725 : What You Need to Know
Discover the impact and mitigation methods for CVE-2021-39725, a privilege escalation vulnerability in the Android kernel that could lead to system compromise.
This article provides an overview of CVE-2021-39725, focusing on the vulnerability in the gasket_free_coherent_memory_all of gasket_page_table.c in Android kernel.
Understanding CVE-2021-39725
CVE-2021-39725 is a vulnerability in the Android kernel that could result in local escalation of privilege, requiring System execution privileges.
What is CVE-2021-39725?
- Type: Elevation of privilege
- Location: gasket_free_coherent_memory_all of gasket_page_table.c
- Risk: Local escalation of privilege without the need for user interaction
The Impact of CVE-2021-39725
The vulnerability could lead to local escalation of privilege with System execution privileges, potentially compromising system security.
Technical Details of CVE-2021-39725
This section outlines the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in gasket_free_coherent_memory_all of gasket_page_table.c may result in memory corruption due to a double free.
Affected Systems and Versions
- Product: Android
- Versions: Android kernel
Exploitation Mechanism
The exploitation of this vulnerability could lead to local escalation of privilege without the need for user interaction.
Mitigation and Prevention
Learn how to mitigate the risks of CVE-2021-39725.
Immediate Steps to Take
- Implement security updates provided by the vendor
- Monitor for any signs of unusual system behavior
Long-Term Security Practices
- Regularly update system and applications
- Conduct security audits and vulnerability assessments
Patching and Updates
Ensure prompt installation of security patches and updates provided by the Android vendor.