CVE-2022-39118 : Security Advisory and Response

This article provides insights into CVE-2022-39118, a vulnerability in the sprd_sysdump driver that could lead to a denial of service attack in the kernel.

Understanding CVE-2022-39118

CVE-2022-39118 is a vulnerability in the sprd_sysdump driver that poses a risk of out-of-bounds write due to a missing bounds check, potentially resulting in a local denial of service attack within the kernel.

What is CVE-2022-39118?

The vulnerability in the sprd_sysdump driver allows threat actors to trigger an out-of-bounds write, leading to a local denial of service attack in the kernel, impacting the overall system stability.

The Impact of CVE-2022-39118

The impact of CVE-2022-39118 can result in a local denial of service attack within the kernel, potentially causing system instability and disruptions to normal operations on affected devices.

Technical Details of CVE-2022-39118

The technical details of CVE-2022-39118 include:

Vulnerability Description

The vulnerability arises from a missing bounds check in the sprd_sysdump driver, enabling threat actors to trigger an out-of-bounds write, leading to a denial of service in the kernel.

Affected Systems and Versions

The following systems and versions are affected:

Vendor: Unisoc (Shanghai) Technologies Co., Ltd.
Products: SC9863A, SC9832E, SC7731E, T610, T310, T606, T760, T610, T618, T606, T612, T616, T760, T770, T820, S8000
Versions: Android10, Android11, Android12

Exploitation Mechanism

The exploitation of CVE-2022-39118 involves leveraging the vulnerability in the sprd_sysdump driver to perform an out-of-bounds write, thereby causing a local denial of service attack in the kernel.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-39118, consider the following steps:

Immediate Steps to Take

Immediate actions include:

Applying patches and updates provided by Unisoc.
Monitoring for any unusual system behavior that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Implement the following long-term security practices:

Regularly updating device firmware to incorporate the latest security patches.
Conducting security audits to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories from Unisoc and promptly apply any patches or updates released to address CVE-2022-39118.