CVE-2018-6927 : Vulnerability Insights and Analysis
Discover the impact of CVE-2018-6927, a Linux kernel vulnerability allowing denial of service attacks through an integer overflow. Learn about affected systems, exploitation, and mitigation steps.
In the Linux kernel prior to version 4.14.15, a vulnerability exists in the futex_requeue function that could be exploited for a denial of service attack through an integer overflow.
Understanding CVE-2018-6927
This CVE entry highlights a potential security issue in the Linux kernel that could lead to a denial of service attack.
What is CVE-2018-6927?
The futex_requeue function in the Linux kernel before version 4.14.15 may allow attackers to trigger an integer overflow, potentially resulting in a denial of service or other unspecified impacts by manipulating wake or requeue values.
The Impact of CVE-2018-6927
The exploitation of this vulnerability could lead to a denial of service attack or other adverse effects if negative wake or requeue values are triggered.
Technical Details of CVE-2018-6927
This section delves into the technical aspects of the CVE.
Vulnerability Description
The futex_requeue function in kernel/futex.c in the Linux kernel before 4.14.15 might allow attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact by triggering a negative wake or requeue value.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions before Linux kernel 4.14.15
Exploitation Mechanism
The vulnerability can be exploited by malicious individuals manipulating wake or requeue values to trigger an integer overflow, leading to a denial of service or other potential impacts.
Mitigation and Prevention
Protecting systems from CVE-2018-6927 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply relevant security patches provided by the Linux kernel maintainers.
- Monitor for any unusual system behavior that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version to mitigate known vulnerabilities.
- Implement strong access controls and monitoring mechanisms to detect and prevent unauthorized system changes.
Patching and Updates
Ensure timely installation of security patches released by the Linux kernel maintainers to address the CVE-2018-6927 vulnerability.