CVE-2020-14356 Explained : Impact and Mitigation

A flaw in the Linux kernel cgroupv2 subsystem before version 5.7.10 allows a local user to crash the system or escalate privileges.

Understanding CVE-2020-14356

This CVE involves a null pointer dereference vulnerability in the Linux kernel.

What is CVE-2020-14356?

This vulnerability in the cgroupv2 subsystem of the Linux kernel before version 5.7.10 can be exploited by a local user to crash the system or elevate their privileges.

The Impact of CVE-2020-14356

The vulnerability could lead to system crashes or unauthorized privilege escalation by a local user.

Technical Details of CVE-2020-14356

This section provides more technical insights into the CVE.

Vulnerability Description

The flaw is a null pointer dereference issue in the Linux kernel cgroupv2 subsystem before version 5.7.10.

Affected Systems and Versions

Product: Kernel
Vendor: n/a
Affected Version: Kernel versions before 5.7.10

Exploitation Mechanism

A local user can trigger the vulnerability during a system reboot, leading to a system crash or privilege escalation.

Mitigation and Prevention

Protect your systems from CVE-2020-14356 with these steps:

Immediate Steps to Take

Apply patches provided by the respective vendors.
Monitor vendor advisories for updates.
Restrict system access to authorized users only.

Long-Term Security Practices

Regularly update and patch your systems.
Implement the principle of least privilege.
Conduct security training for users on best practices.

Patching and Updates

Check for and apply the latest patches from the Linux kernel maintainers.
Stay informed about security updates from relevant vendors.