CVE-2019-12379 : Exploit Details and Defense Strategies
Discover the impact of CVE-2019-12379 found in Linux kernel versions up to 5.1.5. Learn about the memory leak issue and mitigation strategies to secure affected systems.
A problem has been found in the Linux kernel versions up to 5.1.5, specifically in the con_insert_unipair function in drivers/tty/vt/consolemap.c. This CVE identifier is disputed regarding its classification as an issue.
Understanding CVE-2019-12379
In this section, we will delve into the details of CVE-2019-12379.
What is CVE-2019-12379?
CVE-2019-12379 is an issue discovered in the Linux kernel through version 5.1.5. It involves a memory leak in a particular case of an ENOMEM outcome of kmalloc. However, there is a disagreement about whether this identifier truly represents a security issue.
The Impact of CVE-2019-12379
The impact of this CVE revolves around the potential memory leak in specific circumstances, which could affect system stability and performance.
Technical Details of CVE-2019-12379
Let's explore the technical aspects of CVE-2019-12379.
Vulnerability Description
The vulnerability lies in the con_insert_unipair function in drivers/tty/vt/consolemap.c in the Linux kernel versions up to 5.1.5. It results in a memory leak when kmalloc returns ENOMEM.
Affected Systems and Versions
- Affected Systems: Linux kernel versions up to 5.1.5
- Affected Component: con_insert_unipair function in drivers/tty/vt/consolemap.c
Exploitation Mechanism
The exploitation of this vulnerability involves triggering a specific case where kmalloc returns ENOMEM, leading to a memory leak.
Mitigation and Prevention
To address CVE-2019-12379, consider the following mitigation strategies:
Immediate Steps to Take
- Monitor official sources for patches and updates
- Apply relevant security patches promptly
- Implement proper memory management practices
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version
- Conduct security audits and vulnerability assessments
- Enhance system monitoring and logging capabilities
Patching and Updates
- Stay informed about security advisories from Linux kernel maintainers
- Apply patches provided by the kernel developers
- Follow best practices for updating and maintaining kernel versions