Language Selection

English French German Italian Portuguese Spanish

L1TF/Foreshadow News and Benchmarks

Filed under
Graphics/Benchmarks
Security
  • Three More Intel Chip Exploits Surface
  • Spectre-like “Foreshadow” Flaw In Intel CPUs Can Leak Your Secrets
  • QEMU 3.0 Brings Spectre V4 Mitigation, OpenGL ES Support In SDL Front-End

    QEMU 3.0 is now officially available. This big version bump isn't due to some compatibility-breaking changes, but rather to simplify their versioning and begin doing major version bumps on an annual basis. As an added bonus, QEMU 3.0 comes at a time of the project marking its 15th year in existence.

    QEMU 3.0 does amount to being a big feature release with a lot of new functionality as well as many improvements. Changes in QEMU 3.0 include Spectre V4 mitigation for x86 Intel/AMD, improved support for nested KVM guests on Microsoft Hyper-V, block device support for active mirroring, improved support for AHCI and SCSI emulation, OpenGL ES support within the SDL front-end, improved latency for user-mode networking, various ARM improvements, some POWER9 / RISC-V / s390 improvements too, and various other new bits.

  • How the L1 Terminal Fault vulnerability affects Linux systems

    Announced just yesterday in security advisories from Intel, Microsoft and Red Hat, a newly discovered vulnerability affecting Intel processors (and, thus, Linux) called L1TF or “L1 Terminal Fault” is grabbing the attention of Linux users and admins. Exactly what is this vulnerability and who should be worrying about it?

  • An Early Look At The L1 Terminal Fault "L1TF" Performance Impact On Virtual Machines

    Yesterday the latest speculative execution vulnerability was disclosed that was akin to Meltdown and is dubbed the L1 Terminal Fault, or "L1TF" for short. Here are some very early benchmarks of the performance impact of the L1TF mitigation on the Linux virtual machine performance when testing the various levels of mitigation as well as the unpatched system performance prior to this vulnerability coming to light.

  • Phoronix Test Suite 8.2 M2 Released With Offline Improvements, L1TF/Foreshadow Reporting

    The second development snapshot of the upcoming Phoronix Test Suite 8.2-Rakkestad to benchmark to your heart's delight on Linux, macOS, Windows, Solaris, and BSD platforms from embedded/SBC systems to cloud and servers.

  • The Linux Benchmarking Continues On The Threadripper 2950X & 2990WX

    While I haven't posted any new Threadripper 2950X/2990WX benchmarks since the embargo expired on Monday with the Threadripper 2 Linux review and some Windows 10 vs. Linux benchmarks, tests have continued under Linux -- as well as FreeBSD.

    I should have my initial BSD vs. Linux findings on Threadripper 2 out later today. There were about 24 hours worth of FreeBSD-based 2990WX tests going well albeit DragonFlyBSD currently bites the gun with my Threadripper 2 test platforms. More on that in the upcoming article as the rest of those tests finish. It's also been a madhouse with simultaneously benchmarking the new Level 1 Terminal Fault (L1TF) vulnerability and the performance impact of those Linux mitigations on Intel hardware will start to be published in the next few hours.

Flaw discovered in Intel chips

  • Flaw discovered in Intel chips, allows attackers to steal cloud data [Ed: Intel deserves to go bankrupt for selling billions of chips with defects and back doors in them (no accident, they put the ME there consciously)]
  • OpenBSD chief slams Intel , says more CPU flaws likely to be found

    The head of the OpenBSD project, Theo de Raadt, has warned that more flaws related to speculative execution in Intel CPUs are likely to be found and that the two vulnerabilities found by Intel, as a result of examining the Foreshadow bug — found by two independent teams — are cause for much worry.

    De Raadt told iTWire that Foreshadow was "the wrong name. It is one of three side effects of a very poor Intel decision".

    And he added in a mailing list post, "CVE-2018-3615 (Foreshadow) is by receiving the most press which is amazing considering it is by far the most boring of the 3, since very few few people give a rat's ass about SGX – who cares if SGX is broken when the CPU can't run your OS safely? Some convincing press agencies were hired, I guess, and have performed a masterful job of distracting."

  • New family of new speculative execution bugs, Foreshadow, adds to Spectre-Meltdown misery

    Three newly discovered speculative execution vulnerabilities found in Intel CPUs may turn out to be more serious than their Spectre and Meltdown cousins, because this time the side-channel attack bugs affect microprocessors that support Intel Software Guard Extensions, as well as virtual machines running on the same third-party cloud as the susceptible device.

    The new family of Spectre-like flaws, dubbed Foreshadow (CVE-2018-3615) and Foreshadow-NG (CVE-2018-3620 and CVE-2018-3646), were independently uncovered by two separate research teams -- one from imec-DistriNet-KU Leuven in Belgium, and the other from Technion - Israel Institute of Technology, the University of Michigan, and University of Adelaide and CSIRO's Data61 in Australia.

And yet more

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.