CVE-2021-35115 : What You Need to Know

This article discusses CVE-2021-35115, which involves improper handling of multiple sessions supported by PVM backend leading to a use after free vulnerability in Snapdragon Auto and Snapdragon Mobile.

Understanding CVE-2021-35115

CVE-2021-35115 is a high-severity vulnerability affecting Qualcomm's Snapdragon Auto and Snapdragon Mobile devices. The vulnerability arises from the improper handling of multiple sessions supported by the PVM backend, potentially leading to a use after free flaw.

What is CVE-2021-35115?

The CVE-2021-35115 vulnerability in Snapdragon Auto and Snapdragon Mobile is due to the mishandling of multiple sessions supported by the PVM backend, resulting in a use after free flaw. This issue could be exploited by attackers to execute arbitrary code.

The Impact of CVE-2021-35115

The impact of CVE-2021-35115 is significant, with a CVSS base score of 8.4. This high-severity vulnerability could allow attackers to compromise the confidentiality, integrity, and availability of the affected devices, posing a serious security risk.

Technical Details of CVE-2021-35115

CVE-2021-35115 involves a use after free vulnerability in Snapdragon Auto and Snapdragon Mobile. Here are some technical details:

Vulnerability Description

The vulnerability arises from the improper handling of multiple sessions supported by the PVM backend, potentially leading to a use after free flaw.

Affected Systems and Versions

Qualcomm Snapdragon Auto and Snapdragon Mobile devices are affected by this vulnerability across various versions, including APQ8096AU, AR6003, MDM8215, and more.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the multiple sessions supported by the PVM backend, allowing them to execute arbitrary code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-35115, it is essential to take immediate action and implement long-term security practices.

Immediate Steps to Take

Users are advised to apply the necessary patches and updates provided by Qualcomm to address the vulnerability promptly.

Long-Term Security Practices

Implementing robust security measures, such as network segmentation, access control, and regular security audits, can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security bulletins and updates from Qualcomm to ensure that your Snapdragon Auto and Snapdragon Mobile devices are protected against known vulnerabilities.