CVE-2021-35133 : Security Advisory and Response

A detailed overview of CVE-2021-35133 affecting Qualcomm products.

Understanding CVE-2021-35133

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-35133?

The vulnerability involves a use-after-free issue in the synx driver while executing functions in Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile products.

The Impact of CVE-2021-35133

The vulnerability can lead to a high impact on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-35133

This section elaborates on the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper handling of memory while performing synx release calls, leading to potential exploitation.

Affected Systems and Versions

Products like AR8035, QCA6174A, QCS6490, SD888 5G, and more are impacted by CVE-2021-35133.

Exploitation Mechanism

The issue occurs during multiple invocations of synx release calls, allowing threat actors to exploit the vulnerable driver.

Mitigation and Prevention

This section outlines immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users must apply patches provided by Qualcomm promptly to mitigate the risk associated with CVE-2021-35133.

Long-Term Security Practices

Implementing secure coding practices and regular security audits can prevent similar vulnerabilities in the future.

Patching and Updates

Regularly update firmware and software to ensure systems are protected against known vulnerabilities.