CVE-2022-26528 : Security Advisory and Response

Realtek Linux/Android Bluetooth Mesh SDK has been discovered to have a buffer overflow vulnerability. This CVE, identified as CVE-2022-26528, poses a medium-severity risk due to insufficient validation for the length of segmented packets' shift parameter. An attacker in the adjacent network can exploit this vulnerability to cause a buffer overflow, leading to service disruption.

Understanding CVE-2022-26528

This section will delve into the details of the CVE-2022-26528 vulnerability affecting Realtek Linux/Android Bluetooth Mesh SDK.

What is CVE-2022-26528?

The CVE-2022-26528 is a buffer overflow vulnerability in Realtek Linux/Android Bluetooth Mesh SDK. It results from inadequate validation for the length of segmented packets' shift parameter, allowing an unauthenticated attacker in the adjacent network to trigger a buffer overflow.

The Impact of CVE-2022-26528

The vulnerability is rated as medium severity with a CVSS base score of 6.5. It has a high impact on availability, potentially leading to service disruption. Although it does not affect confidentiality or integrity, the exploit does not require any user interaction or special privileges.

Technical Details of CVE-2022-26528

Let's explore the technical aspects of CVE-2022-26528.

Vulnerability Description

The vulnerability arises due to insufficient validation for the length of segmented packets' shift parameter in the Realtek Linux/Android Bluetooth Mesh SDK, resulting in a buffer overflow scenario.

Affected Systems and Versions

The affected product is the Realtek Linux/Android Bluetooth Mesh SDK with versions less than or equal to 4.17-4.17-20220127.

Exploitation Mechanism

An unauthenticated attacker within the adjacent network can exploit this vulnerability by crafting and sending malicious packets to trigger the buffer overflow.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2022-26528 vulnerability.

Immediate Steps to Take

To address this vulnerability, users should update to Realtek Linux/Android Bluetooth Mesh SDK version 4.18-4.18-20220218, which contains the necessary security patches.

Long-Term Security Practices

Implement network segmentation, access controls, and regular security updates to enhance overall system security and resilience.

Patching and Updates

Stay updated with the latest security patches and firmware updates provided by Realtek to protect your systems from potential vulnerabilities.