CVE-2022-26440 : What You Need to Know

This article provides an overview of CVE-2022-26440, a vulnerability in wifi driver by MediaTek, Inc. that could lead to a local escalation of privilege.

Understanding CVE-2022-26440

CVE-2022-26440 is a security vulnerability found in MediaTek's wifi driver, posing a risk of local privilege escalation without the need for user interaction.

What is CVE-2022-26440?

The vulnerability arises from a missing bounds check in the wifi driver, potentially allowing an out-of-bounds write. Attackers could exploit this to escalate local privileges with System execution rights, requiring no user interaction.

The Impact of CVE-2022-26440

The impact of this vulnerability is significant as it could enable attackers to gain elevated privileges on affected systems, compromising their security and integrity.

Technical Details of CVE-2022-26440

This section outlines the technical aspects of CVE-2022-26440 to provide a deeper understanding of the vulnerability.

Vulnerability Description

The vulnerability stems from a lack of proper bounds checking in the wifi driver, allowing for a potential out-of-bounds write that could be leveraged for privilege escalation.

Affected Systems and Versions

The following products and versions are affected:

Products: MT7603, MT7610, MT7612, MT7613, MT7615, MT7620, MT7622, MT7628, MT7629, MT7915, MT7916, MT7986, MT8981
Version: 7.6.2.3

Exploitation Mechanism

Exploiting CVE-2022-26440 does not require user interaction, making it a high-risk vulnerability. Attackers can potentially exploit this flaw to execute malicious actions with elevated privileges.

Mitigation and Prevention

In response to CVE-2022-26440, immediate action and long-term security measures are essential to safeguard affected systems.

Immediate Steps to Take

Apply the provided patch ID: GN20220420037 to mitigate the vulnerability promptly.

Long-Term Security Practices

Regularly update and patch affected systems to prevent exploitation and ensure ongoing protection against potential threats.

Patching and Updates

Stay informed about security bulletins from MediaTek, Inc. and apply relevant patches and updates to address vulnerabilities and enhance system security.