CVE-2019-19077 : Vulnerability Insights and Analysis

A memory leak in the bnxt_re_create_srq() function in the Linux kernel through version 5.3.11 allows attackers to cause a denial of service by triggering copy to udata failures, identified as CID-4a9d46a9fe14.

Understanding CVE-2019-19077

This CVE involves a memory leak vulnerability in the Linux kernel that can lead to a denial of service attack due to excessive memory consumption.

What is CVE-2019-19077?

The vulnerability in the bnxt_re_create_srq() function in the Linux kernel up to version 5.3.11 allows attackers to exploit a memory leak, resulting in a denial of service by causing copy to udata failures.

The Impact of CVE-2019-19077

Attackers can exploit this vulnerability to initiate denial of service attacks by consuming excessive memory.
The flaw can lead to system instability and unresponsiveness.

Technical Details of CVE-2019-19077

This section provides more technical insights into the vulnerability.

Vulnerability Description

The memory leak in the bnxt_re_create_srq() function in the Linux kernel through version 5.3.11 enables attackers to trigger copy to udata failures, resulting in a denial of service due to excessive memory consumption.

Affected Systems and Versions

Affected System: Linux kernel up to version 5.3.11
Affected Function: bnxt_re_create_srq()

Exploitation Mechanism

Attackers exploit the vulnerability by triggering copy to udata failures, leading to a denial of service attack.

Mitigation and Prevention

Protecting systems from CVE-2019-19077 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches provided by the Linux kernel maintainers to address the memory leak vulnerability.
Monitor system resources for any signs of excessive memory consumption.

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version to mitigate known vulnerabilities.
Implement proper access controls and network segmentation to reduce the attack surface.

Patching and Updates

Stay informed about security advisories from Linux kernel maintainers and promptly apply recommended patches to secure the system.