CVE-2019-20095 : What You Need to Know

In the Linux kernel before version 5.1.6, a vulnerability exists in the mwifiex_tm_cmd function that can lead to a denial of service due to a memory leak.

Understanding CVE-2019-20095

This CVE identifies a specific issue within the Linux kernel that can result in a denial of service.

What is CVE-2019-20095?

The vulnerability in the mwifiex_tm_cmd function fails to release allocated memory, potentially causing a memory leak and leading to a denial of service.

The Impact of CVE-2019-20095

The vulnerability can be exploited to trigger a denial of service, impacting the availability of affected systems.

Technical Details of CVE-2019-20095

This section provides technical details about the vulnerability.

Vulnerability Description

The mwifiex_tm_cmd function in the Linux kernel before version 5.1.6 does not properly release allocated memory, resulting in a memory leak and potential denial of service.

Affected Systems and Versions

Affected systems: Linux kernel before version 5.1.6
Affected versions: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by triggering error-handling scenarios within the mwifiex_tm_cmd function, leading to a memory leak and denial of service.

Mitigation and Prevention

Protecting systems from CVE-2019-20095 requires specific actions.

Immediate Steps to Take

Update to Linux kernel version 5.1.6 or later to mitigate the vulnerability.
Monitor system resources for any signs of memory leaks.

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version to address known vulnerabilities.
Implement proper memory management practices to prevent memory leaks.

Patching and Updates

Apply patches provided by the Linux kernel maintainers to fix the vulnerability and prevent exploitation.