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CVE-2021-1917 : Vulnerability Insights and Analysis

Learn about CVE-2021-1917 impacting multiple Qualcomm Snapdragon products. Discover the severity, affected systems, and mitigation strategies to address this null pointer dereference flaw.

A null pointer dereference vulnerability has been identified in DIAG in multiple Qualcomm Snapdragon products, potentially leading to a denial of service condition.

Understanding CVE-2021-1917

This section delves into the details of the CVE-2021-1917 vulnerability affecting various Qualcomm Snapdragon products.

What is CVE-2021-1917?

CVE-2021-1917 is a null pointer dereference flaw that may occur due to memory allocation failure in the DIAG component of Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Wearables.

The Impact of CVE-2021-1917

The vulnerability has been rated with a CVSS base score of 8.4, indicating a high severity issue. An attacker could exploit this flaw to cause a denial of service by triggering a null pointer dereference.

Technical Details of CVE-2021-1917

This section provides a deeper insight into the technical aspects of the CVE-2021-1917 vulnerability.

Vulnerability Description

The vulnerability arises from a null pointer dereference that can occur upon memory allocation failure in the DIAG component of Qualcomm Snapdragon products.

Affected Systems and Versions

Multiple Snapdragon products from Qualcomm, including a wide range of versions, are affected by this vulnerability. Some of the impacted products include Snapdragon Auto, Compute, Connectivity, Industrial IOT, and Wearables.

Exploitation Mechanism

The exploitation of this vulnerability involves leveraging the memory allocation failure in the DIAG module, leading to a null pointer dereference and potentially triggering a denial of service condition.

Mitigation and Prevention

This section covers mitigation strategies and best practices to address CVE-2021-1917.

Immediate Steps to Take

Users are advised to apply security patches provided by Qualcomm to address the vulnerability. Additionally, disabling unnecessary services in affected products can help reduce the attack surface.

Long-Term Security Practices

Implementing secure coding practices and regular security assessments can help in identifying and addressing similar vulnerabilities in the future.

Patching and Updates

Regularly check for security bulletins and updates from Qualcomm to ensure that the systems are protected against known vulnerabilities.

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