CVE-2022-39134 : Exploit Details and Defense Strategies
Learn about CVE-2022-39134, a use after free flaw in Unisoc audio drivers, potentially leading to local denial of service. Find out affected products and mitigation steps.
A use after free vulnerability in the audio driver of Unisoc (Shanghai) Technologies Co., Ltd. products could result in local denial of service in the kernel.
Understanding CVE-2022-39134
This section provides an overview of the CVE-2022-39134 vulnerability.
What is CVE-2022-39134?
The CVE-2022-39134 is a use after free vulnerability in the audio driver of Unisoc products. This vulnerability occurs due to a race condition, potentially leading to a local denial of service within the kernel.
The Impact of CVE-2022-39134
The impact of this vulnerability could allow an attacker to exploit the race condition in the audio driver, resulting in a local denial of service within the kernel on affected systems.
Technical Details of CVE-2022-39134
In this section, we delve into the technical aspects of CVE-2022-39134.
Vulnerability Description
The vulnerability arises from a use after free issue in the audio driver of Unisoc products, triggered by a race condition. Attackers could potentially exploit this to cause a denial of service locally.
Affected Systems and Versions
Products such as SC9863A, SC9832E, SC7731E, T610, T310, T606, T760, T610, T618, T606, T612, T616, T760, T770, T820, and S8000 from Unisoc (Shanghai) Technologies Co., Ltd. running Android 10, Android 11, and Android 12 are affected by this vulnerability.
Exploitation Mechanism
The exploitation of this vulnerability involves a sophisticated understanding of the race condition in the audio driver to trigger the use after free scenario, ultimately causing a local denial of service in the kernel.
Mitigation and Prevention
This section outlines the steps to mitigate and prevent the risks associated with CVE-2022-39134.
Immediate Steps to Take
Immediately update the affected Unisoc products to the latest firmware or patch provided by the vendor. Limiting access to the vulnerable audio driver can also help reduce the attack surface.
Long-Term Security Practices
Adopting secure coding practices, regular security audits, and maintaining up-to-date software can bolster long-term security against similar vulnerabilities.
Patching and Updates
Regularly check for security updates from Unisoc (Shanghai) Technologies Co., Ltd. and apply patches as soon as they are released to address any known vulnerabilities.