CVE-2018-7995 : What You Need to Know

A race condition vulnerability in the Linux kernel through version 4.15.7 can be exploited by local users with root access to cause a denial of service. The issue lies in the store_int_with_restart() function.

Understanding CVE-2018-7995

This CVE describes a race condition vulnerability in the Linux kernel that can lead to a denial of service attack.

What is CVE-2018-7995?

The store_int_with_restart() function in the Linux kernel through version 4.15.7 is vulnerable to a race condition. Local users with root access can exploit this vulnerability to trigger a denial of service by writing to a specific file.

The Impact of CVE-2018-7995

The vulnerability allows attackers to cause a panic, resulting in a denial of service condition on the affected system. It is important to note that there is a dispute regarding the security relevance of this report.

Technical Details of CVE-2018-7995

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists in the store_int_with_restart() function in the mce.c file within the Linux kernel through version 4.15.7. It is a race condition that can be triggered by local users with root access.

Affected Systems and Versions

Affected System: Linux kernel through version 4.15.7
Affected Users: Local users with root access

Exploitation Mechanism

Attackers exploit the vulnerability by writing to the check_interval file in a specific directory.

Mitigation and Prevention

Protecting systems from CVE-2018-7995 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches provided by the Linux kernel maintainers promptly.
Monitor system logs for any suspicious activities.
Restrict root access to trusted users only.

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version.
Implement the principle of least privilege to limit user access rights.
Conduct regular security audits and vulnerability assessments.

Patching and Updates

Stay informed about security advisories from Linux distributions and apply patches as soon as they are available.