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CVE-2022-26443 : Security Advisory and Response

Learn about CVE-2022-26443, a vulnerability in MediaTek wifi drivers allowing local privilege escalation without user interaction. Patch available: GN20220420068.

This article provides detailed information about CVE-2022-26443, a vulnerability in wifi drivers developed by MediaTek, Inc.

Understanding CVE-2022-26443

CVE-2022-26443 is a vulnerability in MediaTek wifi drivers that could potentially lead to a local escalation of privilege without the need for user interaction.

What is CVE-2022-26443?

The vulnerability in the wifi driver is due to a missing bounds check, resulting in a possible out-of-bounds write. An attacker could exploit this flaw to escalate privileges locally.

The Impact of CVE-2022-26443

The impact of this vulnerability is the potential escalation of privilege, which could allow an attacker to gain system execution privileges without requiring user interaction.

Technical Details of CVE-2022-26443

This section outlines the technical details of CVE-2022-26443.

Vulnerability Description

The vulnerability arises from a missing bounds check in the wifi driver, potentially leading to an out-of-bounds write.

Affected Systems and Versions

Affected products include MT7603, MT7610, MT7612, MT7613, MT7615, MT7620, MT7622, MT7628, MT7629, MT7915, MT7916, MT7986, and MT8981 with version 7.6.2.3.

Exploitation Mechanism

The vulnerability can be exploited locally to escalate privileges without requiring user interaction.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2022-26443.

Immediate Steps to Take

        Apply the provided patch ID: GN20220420068 to address the vulnerability.

Long-Term Security Practices

        Regularly update wifi drivers and apply security patches to prevent similar vulnerabilities.

Patching and Updates

        Stay informed about security bulletins from MediaTek to apply timely patches and updates.

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