CVE-2018-6412 : Vulnerability Insights and Analysis
Learn about CVE-2018-6412, an integer signedness error in the Linux kernel enabling arbitrary information leakage. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
An integer signedness error in the Linux kernel through version 4.15 enables arbitrary information leakage when using specific commands within the sbusfb_ioctl_helper() function.
Understanding CVE-2018-6412
This CVE entry highlights a vulnerability in the Linux kernel that could lead to information leakage.
What is CVE-2018-6412?
CVE-2018-6412 is an integer signedness error in the Linux kernel that allows arbitrary information leakage when utilizing certain commands within the sbusfb_ioctl_helper() function.
The Impact of CVE-2018-6412
This vulnerability could potentially be exploited to leak sensitive information, posing a risk to the confidentiality of data processed by affected systems.
Technical Details of CVE-2018-6412
This section delves into the technical aspects of the CVE.
Vulnerability Description
The flaw exists in the function sbusfb_ioctl_helper() in drivers/video/fbdev/sbuslib.c in the Linux kernel through version 4.15, enabling arbitrary information leakage for specific commands.
Affected Systems and Versions
- Affected systems: Linux kernel through version 4.15
- Affected commands: FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC
Exploitation Mechanism
The vulnerability arises due to an integer signedness error, allowing unauthorized access to sensitive information through the mentioned commands.
Mitigation and Prevention
Protecting systems from CVE-2018-6412 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Monitor official sources for patches and updates related to the Linux kernel.
- Implement access controls and restrictions to limit exposure to potential exploitation.
Long-Term Security Practices
- Regularly update the Linux kernel to patched versions to mitigate known vulnerabilities.
- Conduct security assessments and audits to identify and address potential weaknesses in the system.
Patching and Updates
Apply patches provided by the Linux kernel maintainers to address the integer signedness error and prevent information leakage.