CVE-2021-35121 Explained : Impact and Mitigation

This CVE-2021-35121 article provides insights into a vulnerability found in Qualcomm's Snapdragon series affecting various products and versions.

Understanding CVE-2021-35121

This section delves into the details of the identified vulnerability and its potential impact.

What is CVE-2021-35121?

The vulnerability involves an improper use of an array index to lock and unlock a mutex in the Synx driver across multiple Qualcomm Snapdragon product lines, leading to a Use After Free condition.

The Impact of CVE-2021-35121

The vulnerability poses a medium severity risk with high impacts on confidentiality, integrity, and availability, requiring high privileges for exploitation.

Technical Details of CVE-2021-35121

In this section, we explore the technical aspects of the vulnerability further.

Vulnerability Description

The flaw arises from improper array index validation within the MM framework, enabling unauthorized access and potential data corruption.

Affected Systems and Versions

Qualcomm's Snapdragon Compute, Connectivity, Industrial IOT, and Mobile products are affected, including a wide range of versions from APQ8053 to WSA8835.

Exploitation Mechanism

Attackers with high privileges can exploit this vulnerability locally, potentially leading to unauthorized access and system compromise.

Mitigation and Prevention

To secure systems from CVE-2021-35121, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Organizations should prioritize security updates and patches provided by Qualcomm to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing strict privilege management, continuous monitoring, and security training can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly apply security patches and updates from Qualcomm to address known vulnerabilities and enhance system security.