CVE-2021-35075 : What You Need to Know

This CVE-2021-35075 impacts multiple Qualcomm products due to a possible null pointer dereference issue. Learn more about the vulnerability, its impact, technical details, and mitigation steps.

Understanding CVE-2021-35075

CVE-2021-35075 is a vulnerability that affects various Qualcomm products, leading to a potential null pointer dereference vulnerability due to insufficient WDOG structure validation during registration.

What is CVE-2021-35075?

The CVE-2021-35075 vulnerability stems from a lack of proper validation of the WDOG structure during registration across Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile.

The Impact of CVE-2021-35075

The impact of this vulnerability is rated as high, with a CVSS base score of 8.4. It could result in a NULL pointer dereference in the kernel of affected systems, potentially leading to denial of service or other severe consequences.

Technical Details of CVE-2021-35075

Let's delve into the technical aspects of CVE-2021-35075 to understand the vulnerability better.

Vulnerability Description

The vulnerability arises from a lack of proper validation of the WDOG structure during registration, which could be exploited by an attacker to trigger a NULL pointer dereference.

Affected Systems and Versions

Qualcomm products including Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile are impacted by this vulnerability across various versions.

Exploitation Mechanism

The exploitation of this vulnerability involves manipulating the WDOG structure registration, potentially leading to a NULL pointer dereference and subsequent system instability or crash.

Mitigation and Prevention

To address CVE-2021-35075 and enhance the security of affected systems, immediate steps and long-term security practices are crucial.

Immediate Steps to Take

It is recommended to apply security patches released by Qualcomm promptly to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Incorporating robust validation mechanisms into system architecture and keeping systems up to date with the latest security patches can help mitigate similar vulnerabilities in the long term.

Patching and Updates

Regularly check for and apply firmware and software updates from Qualcomm to ensure that systems are protected against known vulnerabilities, including CVE-2021-35075.