CVE-2019-19063 : Security Advisory and Response
CVE-2019-19063 allows attackers to exploit memory leaks in the Linux kernel, leading to denial of service by consuming excessive memory. Learn about the impact, affected systems, and mitigation steps.
The rtl_usb_probe() function in the Linux kernel through version 5.3.11 has two memory leaks in drivers/net/wireless/realtek/rtlwifi/usb.c, leading to a denial of service due to excessive memory consumption.
Understanding CVE-2019-19063
What is CVE-2019-19063?
Two memory leaks in the rtl_usb_probe() function in the Linux kernel through version 5.3.11 allow attackers to cause a denial of service by consuming excessive memory.
The Impact of CVE-2019-19063
This vulnerability, identified as CID-3f9361695113, can be exploited by attackers, resulting in a denial of service where excessive memory is consumed.
Technical Details of CVE-2019-19063
Vulnerability Description
The rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux kernel through version 5.3.11 has two memory leaks that can be exploited by attackers.
Affected Systems and Versions
- Affected System: Linux kernel through version 5.3.11
- Affected Component: rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c
Exploitation Mechanism
Attackers can exploit the memory leaks in the rtl_usb_probe() function to trigger a denial of service attack by consuming excessive memory.
Mitigation and Prevention
Immediate Steps to Take
- Apply patches provided by the Linux kernel maintainers to address the memory leaks.
- Monitor system resources for unusual memory consumption.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version.
- Implement proper memory management practices in kernel development.
Patching and Updates
- Ensure timely installation of security updates and patches released by the Linux kernel maintainers.