CVE-2023-28147 : Vulnerability Insights and Analysis

This CVE was published by MITRE on June 1, 2023, and involves an issue discovered in the Arm Mali GPU Kernel Driver. It allows a non-privileged user to exploit improper GPU processing operations to gain access to already freed memory within specific versions of different GPU architectures.

Understanding CVE-2023-28147

This section will delve into what CVE-2023-28147 entails, its impact, technical details, and steps to mitigate and prevent potential exploitation.

What is CVE-2023-28147?

CVE-2023-28147 is a vulnerability found in the Arm Mali GPU Kernel Driver, enabling unauthorized access to freed memory through improper GPU operations. The affected GPU architectures include Midgard, Bifrost, Valhall, and Arm's GPU Architecture Gen5 within specific version ranges.

The Impact of CVE-2023-28147

The impact of this vulnerability is significant as it allows non-privileged users to exploit the GPU processing operations to gain access to memory that has already been freed. This could potentially lead to unauthorized access to sensitive data or system crashes.

Technical Details of CVE-2023-28147

Understanding the technical aspects of CVE-2023-28147 is crucial for effectively addressing and mitigating the vulnerability.

Vulnerability Description

The vulnerability in the Arm Mali GPU Kernel Driver permits non-privileged users to perform improper GPU processing operations, leading to unauthorized access to freed memory segments.

Affected Systems and Versions

The affected systems include Midgard r29p0 through r32p0, Bifrost r17p0 through r42p0 before r43p0, Valhall r19p0 through r42p0 before r43p0, and Arm's GPU Architecture Gen5 r41p0 through r42p0 before r43p0.

Exploitation Mechanism

Exploiting CVE-2023-28147 involves manipulating GPU processing operations to access memory that should have been released, potentially compromising system integrity and data confidentiality.

Mitigation and Prevention

Taking immediate steps to address CVE-2023-28147 and implementing long-term security practices are essential to safeguard vulnerable systems.

Immediate Steps to Take

It is recommended to apply security patches promptly, restrict user privileges, and monitor GPU driver activities for any signs of unauthorized memory access.

Long-Term Security Practices

Establishing robust access controls, conducting regular security audits, and staying informed about GPU driver updates and security advisories are crucial for maintaining system security.

Patching and Updates

Utilize the provided security patches from the respective GPU architecture vendors to address the CVE-2023-28147 vulnerability effectively and prevent potential exploitation.