CVE-2022-26438 : Security Advisory and Response
Learn about CVE-2022-26438, a vulnerability in MediaTek wifi drivers allowing local privilege escalation. Find out impacted systems, exploitation risks, and mitigation steps.
This article provides detailed information about CVE-2022-26438, a vulnerability in wifi drivers affecting MediaTek devices.
Understanding CVE-2022-26438
CVE-2022-26438 is a security vulnerability found in wifi drivers that could allow an attacker to perform a local escalation of privilege without requiring user interaction.
What is CVE-2022-26438?
The vulnerability in wifi driver code lacks proper bounds checking, leading to a potential out-of-bounds write scenario. Exploitation could result in a local privilege escalation on affected devices.
The Impact of CVE-2022-26438
The impact of this vulnerability is the potential elevation of privileges on the affected MediaTek devices, posing a security risk to user data and system integrity.
Technical Details of CVE-2022-26438
This section dives into specific technical aspects of the CVE including vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability arises due to the absence of adequate bounds checking in the wifi driver code, allowing for unauthorized write operations outside the designated memory boundaries.
Affected Systems and Versions
The vulnerability affects a range of MediaTek devices including MT7603, MT7610, MT7612, MT7613, MT7615, MT7620, MT7622, MT7628, MT7629, MT7915, MT7916, MT7986, MT8981 with version 7.6.2.3.
Exploitation Mechanism
Exploitation of CVE-2022-26438 does not necessitate user interaction. Attackers can leverage this vulnerability to escalate privileges locally on the impacted devices.
Mitigation and Prevention
In this section, we discuss immediate steps to take and long-term security practices to safeguard against CVE-2022-26438.
Immediate Steps to Take
Users are advised to apply the patch provided by MediaTek identified as Patch ID GN20220420013 to mitigate the vulnerability. Promptly applying the patch can prevent potential exploitation.
Long-Term Security Practices
To enhance overall device security, users should regularly update their MediaTek devices, implement security best practices, and stay informed about security bulletins.
Patching and Updates
Regularly check for security updates from MediaTek and promptly apply patches to address known vulnerabilities and enhance overall system security.