CVE-2021-39698 : Security Advisory and Response

This CVE-2021-39698 article provides details about a memory corruption vulnerability in the Android kernel that could lead to privilege escalation.

Understanding CVE-2021-39698

CVE-2021-39698 is a vulnerability in the Android kernel that allows for local escalation of privilege without the need for additional execution privileges, potentially leading to serious security risks.

What is CVE-2021-39698?

Vulnerability in aio_poll_complete_work of aio.c
Allows for memory corruption due to a use after free
Enables local privilege escalation without additional execution privileges
No user interaction required for exploitation

The Impact of CVE-2021-39698

This CVE can result in an attacker gaining elevated privileges on the affected system, posing a significant risk to data security and system integrity.

Technical Details of CVE-2021-39698

The technical aspects of the CVE-2021-39698 vulnerability are as follows:

Vulnerability Description

Found in aio_poll_complete_work of aio.c
Leads to memory corruption via use after free

Affected Systems and Versions

Product: Android
Versions: Android kernel

Exploitation Mechanism

Allows for local escalation of privilege

Mitigation and Prevention

Here are some steps to mitigate and prevent the exploitation of CVE-2021-39698:

Immediate Steps to Take

Apply security patches provided by the vendor
Monitor vendor's security advisories for updates

Long-Term Security Practices

Regularly update the system and all software
Implement least privilege access controls

Patching and Updates

Install relevant security patches as soon as they are released