CVE-2022-46396 Explained : Impact and Mitigation

A non-privileged user can exploit a vulnerability in the Arm Mali Kernel Driver to access a limited amount of memory outside buffer bounds. This impacts Valhall versions r29p0 through r41p0 and Avalon version r41p0 before r42p0.

Understanding CVE-2022-46396

This CVE identifies a security flaw in the Arm Mali Kernel Driver that could allow unauthorized access to GPU memory.

What is CVE-2022-46396?

CVE-2022-46396 refers to a vulnerability in the Arm Mali Kernel Driver that enables a non-privileged user to perform improper GPU memory processing operations, leading to unauthorized access to memory beyond specified limits.

The Impact of CVE-2022-46396

This vulnerability could be exploited by malicious actors to gain access to sensitive information stored in GPU memory, potentially leading to data breaches and system compromise.

Technical Details of CVE-2022-46396

The technical details of this CVE include:

Vulnerability Description

The vulnerability allows non-privileged users to make improper GPU memory processing operations, leading to unauthorized access to memory beyond buffer bounds.

Affected Systems and Versions

Valhall versions r29p0 through r41p0 and Avalon version r41p0 before r42p0 are affected by this vulnerability.

Exploitation Mechanism

Malicious users can exploit this vulnerability to access a limited amount of memory outside of buffer bounds, potentially compromising system integrity.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-46396, follow these steps:

Immediate Steps to Take

Implement security patches provided by Arm to address this vulnerability.
Monitor GPU memory access for any suspicious activities.

Long-Term Security Practices

Regularly update GPU drivers to ensure the latest security enhancements are in place.
Conduct security assessments and penetration testing to identify and address any vulnerabilities proactively.

Patching and Updates

Arm has released patches for Valhall versions r29p0 through r41p0 and Avalon version r41p0 before r42p0 to fix this vulnerability.