Linux 5.4 brings Lockdown, a new security mode

by | Nov 25, 2019

Linus Torvalds announced yesterday the availability of Linux 5.4. The latest stable version of this operating system comes with a new security function that has sparked the debate between different sectors of the community. Enabling Lockdown prevents even users with root permissions from making changes to the kernel code. Their opponents claim that it goes against the Open Source philosophy of this project and their supporters praise the security improvements promised by this system.

Lockdown comes locked by default and allows two lock modes: integrity and confidentiality. The first provides a full block, so it is impossible to make any modification in the kernel. The second adds one more limitation: all functions that allow to extract confidential information about the kernel are also totally blocked.

Another highlight of Linux 5.4 is the native support of exFAT, the new Microsoft file system that accelerates file transfer, even with large multimedia files.

In addition, graphics performance has been improved by adding support for AMD Radeon Navi 12 and 14 GPUs, AMD Radeon Arcturus GPUs and AMU Dali APU.

Support has also been improved by adding new functions and features for AMD Ryzen 3000 series CPUs and AMD EPYC microprocessors.

Among the rest of the Linux 5.4 enhancements are the compatibility with Intel Tiger Lake CPUs, Qualcomm Snapdragon 855 SoCs, support for Intel Lightning Mountain SoC, improved application memory management on Android and a new high-performance virtio controller to share files.

The list of all the news is available in the announcement made by Linus Torvalds and in Kernelnewbies.



Submit a Comment

Your email address will not be published. Required fields are marked *

Recent posts

VDI: The most secure environment for hybrid working

Today is Data Privacy Day. The purpose of this date is to raise awareness and promote privacy and data protection best practices. It was initiated by the European Commission, the Council of Europe, and the Data Protection authorities of the European Union’s member states. Their main goal was to drive attention to the importance of privacy, user data protection, and compliance of the General Data Protection Regulation (RGPD). It is a regulation characterized by significant fines for non-compliance since its implementation in 2018.

How to avoid issues with virtual machines

Virtualization comes with a wide range of benefits for organizations. It helps cut IT costs and reduces downtime while increasing efficiency and productivity. It also increases the resiliency of networks, primarily when disasters occur, and promotes more green-friendly operations.

However, using virtual machines also comes with a set of downsides. Information security may get compromised, workloads mixed up, separation duties lost, among other issues. It is vital to know how you can get over these problems, and that’s what this article will discuss.

Let’s get started.


Stay up to date with all the news from UDS ENTERPRISE through our social networks. Follow us!

Skip to content