CVE-2022-40135 : What You Need to Know

An information leak vulnerability in the Smart USB Protection SMI Handler in some Lenovo models may allow an attacker with local access and elevated privileges to read SMM memory.

Understanding CVE-2022-40135

This article provides insights into the CVE-2022-40135 vulnerability affecting certain Lenovo models.

What is CVE-2022-40135?

The CVE-2022-40135 vulnerability is an information leak issue in the Smart USB Protection SMI Handler in specific Lenovo models. This flaw could be exploited by a local attacker with elevated privileges to access SMM memory.

The Impact of CVE-2022-40135

The impact of CVE-2022-40135 is considered medium severity with a base score of 4.4. It poses a high risk to confidentiality, allowing unauthorized access to sensitive information.

Technical Details of CVE-2022-40135

This section delves into the technical aspects of the CVE-2022-40135 vulnerability.

Vulnerability Description

The vulnerability involves an information leak in the Smart USB Protection SMI Handler, enabling attackers to read SMM memory on affected Lenovo models.

Affected Systems and Versions

The Smart USB Protection SMI Handler vulnerability impacts various versions of BIOS on specific Lenovo models.

Exploitation Mechanism

To exploit CVE-2022-40135, an attacker needs local access and elevated privileges on the target system, making it crucial to address this issue promptly.

Mitigation and Prevention

Learn how to mitigate and prevent potential risks associated with CVE-2022-40135.

Immediate Steps to Take

Immediately update the system firmware on affected Lenovo models to mitigate the CVE-2022-40135 vulnerability.

Long-Term Security Practices

Implement robust security practices, such as regular firmware updates and access control measures, to enhance overall system security.

Patching and Updates

Refer to the Lenovo Product Impact section in LEN-94953 for detailed instructions on updating system firmware.