CVE-2019-19947 : Vulnerability Insights and Analysis
Learn about CVE-2019-19947, a vulnerability in the Linux kernel allowing information leaks to a USB device. Find out how to mitigate this issue and protect your system.
A vulnerability in the Linux kernel exposes uninitialized memory to a USB device, leading to information leaks.
Understanding CVE-2019-19947
What is CVE-2019-19947?
The Linux kernel up to version 5.4.6 is affected by a vulnerability in the drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c driver, allowing exposure of uninitialized memory to a USB device.
The Impact of CVE-2019-19947
This vulnerability can result in information leaks, potentially compromising sensitive data.
Technical Details of CVE-2019-19947
Vulnerability Description
The vulnerability exposes uninitialized memory to a USB device in the Linux kernel, identified as CID-da2311a6385c.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Up to Linux kernel version 5.4.6
Exploitation Mechanism
The vulnerability can be exploited by a USB device to access uninitialized memory, leading to information disclosure.
Mitigation and Prevention
Immediate Steps to Take
- Apply security updates provided by Linux distributions promptly.
- Monitor vendor advisories for patches and mitigation strategies.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version.
- Implement proper USB device security measures to prevent unauthorized access.
Patching and Updates
- Update the Linux kernel to version 5.4.7 or later to mitigate the vulnerability.