CVE-2021-39681 Explained : Impact and Mitigation
Learn about CVE-2021-39681, a vulnerability in Android kernel leading to local escalation of privilege. Find mitigation steps and impacts in this article.
This CVE-2021-39681 article provides details about a vulnerability in Android kernel that could allow arbitrary code execution.
Understanding CVE-2021-39681
CVE-2021-39681 is a security vulnerability in the Android kernel that can result in local escalation of privilege.
What is CVE-2021-39681?
The vulnerability exists in delete_protocol of main.c, potentially leading to arbitrary code execution due to a use after free. The exploit does not require user interaction.
The Impact of CVE-2021-39681
The exploit could allow an attacker to locally escalate privileges without needing additional execution privileges.
Technical Details of CVE-2021-39681
CVE-2021-39681 technical details are as follows:
Vulnerability Description
- Type: Elevation of privilege
- Description: Arbitrary code execution due to a use after free in delete_protocol of main.c.
Affected Systems and Versions
- Product: Android
- Versions: Android kernel
Exploitation Mechanism
The vulnerability can be exploited locally without requiring user interaction.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent exploitation of CVE-2021-39681.
Immediate Steps to Take
- Apply patches and updates provided by the vendor.
- Monitor security bulletins for further instructions.
Long-Term Security Practices
- Regularly update and patch your systems.
- Employ robust security measures to mitigate similar vulnerabilities.
Patching and Updates
Ensure timely installation of updates and patches to protect against CVE-2021-39681.