CVE-2019-5673 : Security Advisory and Response

NVIDIA Jetson TX2 contains a vulnerability in the kernel driver (on all versions prior to R28.3) where the ARM System Memory Management Unit (SMMU) improperly checks for a fault condition, causing transactions to be discarded, which may lead to denial of service.

Understanding CVE-2019-5673

The vulnerability in NVIDIA Jetson TX2 could result in a denial of service due to improper handling of transactions by the ARM System Memory Management Unit (SMMU).

What is CVE-2019-5673?

The vulnerability in the kernel driver of NVIDIA Jetson TX2, present in versions before R28.3, allows for the potential denial of service by failing to properly check for a fault condition.

The Impact of CVE-2019-5673

The vulnerability could lead to transactions being discarded, potentially resulting in a denial of service for affected systems.

Technical Details of CVE-2019-5673

The technical aspects of the vulnerability in NVIDIA Jetson TX2.

Vulnerability Description

Vulnerability in the kernel driver of NVIDIA Jetson TX2 before version R28.3
ARM System Memory Management Unit (SMMU) fails to check for a fault condition
Transactions may be discarded, leading to a denial of service

Affected Systems and Versions

Product: Jetson TX2
Vendor: NVIDIA
Versions affected: All versions prior to R28.3

Exploitation Mechanism

Lack of proper checking for fault conditions in the ARM System Memory Management Unit (SMMU)
Transactions being discarded can result in a denial of service

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2019-5673 vulnerability.

Immediate Steps to Take

Update affected systems to version R28.3 or later
Monitor for any unusual system behavior indicating a denial of service attack

Long-Term Security Practices

Regularly update and patch systems to prevent vulnerabilities
Implement network security measures to detect and mitigate denial of service attacks

Patching and Updates

Apply patches provided by NVIDIA to address the vulnerability in Jetson TX2