CVE-2019-15926 Explained : Impact and Mitigation

A vulnerability was identified in the Linux kernel versions earlier than 5.2.3. The functions ath6kl_wmi_pstream_timeout_event_rx and ath6kl_wmi_cac_event_rx in the drivers/net/wireless/ath/ath6kl/wmi.c file have the potential for out of bounds access.

Understanding CVE-2019-15926

This CVE pertains to a vulnerability in the Linux kernel that could allow for out of bounds access in specific functions.

What is CVE-2019-15926?

CVE-2019-15926 is a security vulnerability found in Linux kernel versions prior to 5.2.3. It specifically affects the functions ath6kl_wmi_pstream_timeout_event_rx and ath6kl_wmi_cac_event_rx in the drivers/net/wireless/ath/ath6kl/wmi.c file.

The Impact of CVE-2019-15926

The vulnerability could potentially be exploited to gain unauthorized access to sensitive information, execute arbitrary code, or cause a denial of service (DoS) on affected systems.

Technical Details of CVE-2019-15926

This section provides more in-depth technical details about the CVE.

Vulnerability Description

The issue lies in the out of bounds access present in the functions ath6kl_wmi_pstream_timeout_event_rx and ath6kl_wmi_cac_event_rx within the specified file.

Affected Systems and Versions

Linux kernel versions earlier than 5.2.3

Exploitation Mechanism

Attackers could potentially exploit this vulnerability to execute malicious code, access unauthorized data, or disrupt the normal operation of affected systems.

Mitigation and Prevention

Protecting systems from CVE-2019-15926 requires immediate action and long-term security measures.

Immediate Steps to Take

Update the Linux kernel to version 5.2.3 or newer to mitigate the vulnerability.
Monitor for any unusual activities on the network that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch all software and systems to prevent known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security updates and patches released by Linux distributions and vendors to address CVE-2019-15926.