CVE-2019-19045 : What You Need to Know

A memory leak vulnerability in the mlx5_fpga_conn_create_cq() function in the Linux kernel prior to version 5.3.11 can lead to denial of service attacks. Attackers can exploit this vulnerability by triggering specific failures, resulting in memory consumption.

Understanding CVE-2019-19045

This CVE involves a memory leak vulnerability in the mlx5_fpga_conn_create_cq() function in the Linux kernel.

What is CVE-2019-19045?

The mlx5_fpga_conn_create_cq() function in the Linux kernel before version 5.3.11 has a memory leak vulnerability. Attackers can exploit this flaw to cause denial of service by intentionally triggering specific failures.

The Impact of CVE-2019-19045

This vulnerability allows attackers to cause a denial of service by consuming excessive memory through triggering mlx5_vector2eqn() failures.

Technical Details of CVE-2019-19045

This section provides technical details about the vulnerability.

Vulnerability Description

A memory leak in the mlx5_fpga_conn_create_cq() function in the Linux kernel before 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering specific failures.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

Attackers exploit the vulnerability by intentionally triggering mlx5_vector2eqn() failures.

Mitigation and Prevention

Protecting systems from CVE-2019-19045 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Linux kernel to version 5.3.11 or newer to mitigate the vulnerability.
Monitor system resources for any signs of memory consumption.

Long-Term Security Practices

Regularly update the Linux kernel and apply security patches promptly.
Implement proper access controls and monitoring to detect abnormal behavior.

Patching and Updates

Refer to the official Linux kernel website for the patch release notes and update instructions.