CVE-2022-39123 : Security Advisory and Response

A detailed analysis of CVE-2022-39123, focusing on the impact, technical details, and mitigation strategies.

Understanding CVE-2022-39123

This section delves into the specifics of CVE-2022-39123, an out of bounds write vulnerability in a sensor driver leading to a local denial of service in the kernel.

What is CVE-2022-39123?

The CVE-2022-39123 vulnerability arises from a missing bounds check in a sensor driver, potentially resulting in an out of bounds write. Exploiting this flaw could result in a local denial of service within the kernel.

The Impact of CVE-2022-39123

The impact of CVE-2022-39123 is significant as it could be leveraged by a local attacker to disrupt normal operations by causing a denial of service within the kernel.

Technical Details of CVE-2022-39123

This section provides a deeper look into the technical aspects of CVE-2022-39123, including vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability stems from a lack of proper bounds checking in a sensor driver, enabling an attacker to perform out of bounds writes, potentially leading to a denial of service condition.

Affected Systems and Versions

Unisoc (Shanghai) Technologies Co., Ltd. devices running Android10, Android11, or Android12 are affected by CVE-2022-39123. Specifically, products like SC9863A, SC9832E, SC7731E, T610, T310, T606, T760, T610, T618, T606, T612, T616, T760, T770, T820, and S8000 are vulnerable.

Exploitation Mechanism

Exploiting CVE-2022-39123 involves triggering the out of bounds write in the sensor driver, which could be achieved by crafting and sending specially designed inputs to the vulnerable system.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent the exploitation of CVE-2022-39123.

Immediate Steps to Take

Immediate mitigation steps include applying security patches from Unisoc to address the vulnerability. Users are advised to update their devices promptly.

Long-Term Security Practices

Employing best security practices, such as regular software updates, implementing security measures, and monitoring for unusual system behavior, can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security updates from Unisoc for the affected products to ensure that any known vulnerabilities, including CVE-2022-39123, are addressed.