CVE-2019-19532 : Vulnerability Insights and Analysis

The Linux kernel before version 5.3.9 has multiple out-of-bounds write vulnerabilities triggered by malicious USB devices using HID drivers.

Understanding CVE-2019-19532

This CVE identifies out-of-bounds write bugs in the Linux kernel HID drivers.

What is CVE-2019-19532?

The Linux kernel before version 5.3.9 contains several instances of out-of-bounds write vulnerabilities. These vulnerabilities can be triggered by a malicious USB device when utilizing the Linux kernel HID drivers. The affected HID driver files include hid-axff.c, hid-dr.c, hid-emsff.c, and more.

The Impact of CVE-2019-19532

These vulnerabilities can be exploited by attackers using malicious USB devices to potentially execute arbitrary code or cause a denial of service (DoS) on affected systems.

Technical Details of CVE-2019-19532

The technical aspects of this CVE include:

Vulnerability Description

Multiple out-of-bounds write bugs in Linux kernel HID drivers triggered by malicious USB devices.

Affected Systems and Versions

Linux kernel versions before 5.3.9
Specific HID driver files mentioned in the descriptions

Exploitation Mechanism

Attackers can exploit these vulnerabilities by sending specially crafted USB packets to trigger out-of-bounds writes in the HID drivers.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2019-19532:

Immediate Steps to Take

Update the Linux kernel to version 5.3.9 or newer
Monitor USB device connections for suspicious activity
Implement USB device usage policies

Long-Term Security Practices

Regularly update the Linux kernel and system components
Conduct security assessments and audits of HID drivers and USB subsystem

Patching and Updates

Apply security patches provided by Linux distributions and vendors
Stay informed about security advisories and updates from relevant sources