CVE-2017-6386 Explained : Impact and Mitigation

Virglrenderer has a memory leak vulnerability that allows local guest OS users to disrupt the service by executing a large number of commands.

Understanding CVE-2017-6386

Virglrenderer vulnerability with memory leak issue.

What is CVE-2017-6386?

The function vrend_create_vertex_elements_state in virglrenderer's vrend_renderer.c file has a memory leak problem. This flaw enables local guest OS users to disrupt the service by executing numerous VIRGL_OBJECT_VERTEX_ELEMENTS commands.

The Impact of CVE-2017-6386

The vulnerability allows attackers to consume host memory, leading to a denial of service condition.

Technical Details of CVE-2017-6386

Details of the vulnerability in Virglrenderer.

Vulnerability Description

Virglrenderer's vrend_create_vertex_elements_state function has a memory leak issue, allowing local guest OS users to cause a denial of service by consuming host memory with a large number of commands.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by executing a considerable amount of VIRGL_OBJECT_VERTEX_ELEMENTS commands.

Mitigation and Prevention

Ways to address and prevent the CVE-2017-6386 vulnerability.

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor memory consumption for unusual spikes.
Implement strict access controls to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security training for users to recognize and report suspicious activities.
Implement network segmentation to contain potential threats.

Patching and Updates

Check for security advisories from the vendor regularly.
Apply patches and updates as soon as they are available to mitigate the risk of exploitation.