CVE-2021-44828 : Security Advisory and Response

Arm Mali GPU Kernel Driver (Midgard r26p0 through r30p0, Bifrost r0p0 through r34p0, and Valhall r19p0 through r34p0) allows a non-privileged user to achieve write access to read-only memory, potentially leading to root privileges, memory corruption, and manipulation of other processes.

Understanding CVE-2021-44828

What is CVE-2021-44828?

The CVE-2021-44828 is a vulnerability in the Arm Mali GPU Kernel Driver that enables unauthorized write access to read-only memory, posing risks of system corruption and unauthorized data manipulation.

The Impact of CVE-2021-44828

This vulnerability could allow a non-privileged user to escalate privileges, impacting system integrity and potentially compromising sensitive data stored in memory.

Technical Details of CVE-2021-44828

Vulnerability Description

The vulnerability in the Arm Mali GPU Kernel Driver permits unauthorized write access to read-only memory, enabling potential root privilege escalation and memory corruption.

Affected Systems and Versions

Affected versions include Midgard r26p0 through r30p0, Bifrost r0p0 through r34p0, and Valhall r19p0 through r34p0.

Exploitation Mechanism

The vulnerability can be exploited by a non-privileged user to gain unauthorized write access to read-only memory, potentially leading to root privileges and manipulation of other processes.

Mitigation and Prevention

Immediate Steps to Take

Implement security patches provided by Arm to address the vulnerability.
Monitor system activity for any signs of unauthorized memory access.

Long-Term Security Practices

Regularly update and patch GPU drivers to mitigate potential security risks.
Enforce the principle of least privilege to limit unauthorized access to critical system resources.

Patching and Updates

Apply the latest security updates and patches from Arm to ensure the mitigation of the vulnerability and enhance system security.