CVE-2022-42270 : What You Need to Know

This article provides detailed information on CVE-2022-42270, a vulnerability found in NVIDIA distributions of Linux affecting specific versions. It discusses the impact, technical details, and mitigation strategies.

Understanding CVE-2022-42270

CVE-2022-42270 is a vulnerability identified in NVIDIA distributions of Linux, potentially leading to a stack-based buffer overflow in kernel code. This can result in various security compromises and denial of service.

What is CVE-2022-42270?

NVIDIA distributions of Linux contain a vulnerability in nvdla_emu_task_submit, allowing local attackers to exploit unvalidated input. This can trigger a stack-based buffer overflow in kernel code, leading to escalation of privileges, compromised integrity and confidentiality, and denial of service.

The Impact of CVE-2022-42270

The vulnerability poses severe risks, including Code Execution, Denial of Service, Escalation of Privileges, Information Disclosure, and Data Tampering. The potential consequences involve compromised integrity, confidentiality, and service disruption.

Technical Details of CVE-2022-42270

CVE-2022-42270 falls under CWE-121: Stack-based Buffer Overflow and has a CVSS v3.1 Base Score of 7.8 (High severity). The attack complexity is low, requiring local access. With high impacts on availability, confidentiality, and integrity.

Vulnerability Description

The vulnerability in nvdla_emu_task_submit can lead to a stack-based buffer overflow in kernel code, posing risks of privilege escalation and denial of service.

Affected Systems and Versions

The impacted platforms include Jetson Linux with specific affected versions like 35.1, 34.1.1, 32.7.2, and prior releases of NVIDIA Jetson AGX Xavier Series, Jetson Xavier NX, and Jetson AGX Orin Series.

Exploitation Mechanism

Attackers with local access can exploit unvalidated input to trigger the buffer overflow, potentially compromising system integrity and causing denial of service.

Mitigation and Prevention

Proper mitigation steps are crucial to address CVE-2022-42270 and enhance system security measures. Immediate actions and long-term practices are essential.

Immediate Steps to Take

It is recommended to apply security patches promptly, restrict access to vulnerable systems, and monitor for any unauthorized activities.

Long-Term Security Practices

Implement robust security protocols, conduct regular vulnerability assessments, and educate users on safe computing practices to prevent similar issues.

Patching and Updates

Regularly update software versions, follow vendor guidelines for security patches, and stay informed about potential vulnerabilities to maintain a secure environment.