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Intel AEX Notify Support Prepped For Linux To Help Enhance SGX Enclave Security

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Future Intel CPUs and some existing processors via a microcode update will support a new feature called the Asynchronous EXit (AEX) notification mechanism to help with Software Guard Extensions (SGX) enclave security. Patches for the Linux kernel are pending for implementing this Intel AEX Notify support with capable processors.

LinuxSecurity.com Team
Nov 19, 2022

Linux Still Eyes Better Security By Default Enabling Indirect Branch Tracking (IBT)

Indirect Branch Tracking (IBT) is still being eyed for enabling as part of the default Linux x86_64 kernel configurations to provide better out-of-the-box security on supported processors. A patch sent out today continues the upstream discussion over flipping on this feature by default that is part of Intel's Control-flow Enforcement Technology (CET) for helping to defend against jump/call oriented programming attacks.

LinuxSecurity.com Team
Nov 04, 2022

Sigstore Reaches GA For Working To Secure The Open-Source Software Supply Chain

Sigstore that is backed by Google, Red Hat, GitHub, and other prominent organizations with an aim to secure the open-source software supply chain has reached general availability and issued the "v1.0" releases for their key software components.

LinuxSecurity.com Team
Oct 30, 2022

Linus Torvalds Wants to Drop i486 Support from the Linux Kernel Citing its Age

Linux Torvalds, founder of the Linux kernel, has posted in the kernel mailing list that he wants to drop support for Intel 486 (i486) processors, citing their age. The i486 CPUs were introduced way back in April 1989 and discontinued in 2007. They were designed by Pat Gelsinger, who is now Intel’s CEO.

LinuxSecurity.com Team
Oct 26, 2022

Linux 6.1 Features Include Initial Rust Code, MGLRU, New AMD CPU Features, More Security

Now that Linux 6.1-rc1 was released, here is my look at all of the interesting kernel changes and new features that landed over the past two weeks. Linux 6.1 is shaping up to be another exciting kernel with many new software features, new hardware enablement work, and other changes for this end-of-year 2022 kernel version that is also likely to be the next Linux LTS release.

LinuxSecurity.com Team
Oct 20, 2022

Google Reveals Another Experimental Operating System: KataOS

Google, one of very few tech companies willing to experiment with new operating systems, has unveiled KataOS for embedded machine learning devices.

LinuxSecurity.com Team
Oct 20, 2022

Google Announces KataOS As Security-Focused OS, Leveraging Rust & seL4 Microkernel

Google this week has announced the release of KataOS as their newest operating system effort focused on embedded devices running ambient machine learning workloads. KataOS is security-minded, exclusively uses the Rust programming language, and is built atop the seL4 microkernel as its foundation.

LinuxSecurity.com Team
Oct 17, 2022

Linux 6.1 Lands Code To Warn About W+X Mappings By Default

In addition to MGLRU and Maple Tree having been merged overnight, Linus Torvalds also picked up the x86/mm changes for Linux 6.1 that will now by default warn about W+X mappings.

LinuxSecurity.com Team
Oct 14, 2022

Linus Torvalds's Faulty Memory (RAM, not wetware) Slows Kernel Development

If the next version of the Linux kernel emerges a little slower than usual, blame a dodgy DIMM in Linus Torvalds's AMD Threadripper-powered PC and the vagaries of the memory market.

LinuxSecurity.com Team
Oct 10, 2022

Fwupd 1.8.6 Released With Smaller Package Size, New Hardware Support

Fwupd 1.8.6 is out as the newest stable release of this open-source firmware updating tool most notably used by Linux systems but also supported on various BSDs and even Windows.

LinuxSecurity.com Team
Oct 10, 2022

The Most Interesting New Features Of Linux 6.0

Linux 6.0 comes with many notable hardware support additions and other improvements, here is a reminder of all what is great about this imminent kernel release.

LinuxSecurity.com Team
Oct 05, 2022

LLVM 15.0.1 Released With Nearly Three Dozen Fixes

It's been two weeks since the release of LLVM 15.0 and its sub-projects like Clang 15.0 so per their rapid release rhythm, LLVM 15.0.1 is out with the initial batch of fixes.

LinuxSecurity.com Team
Sep 30, 2022

Linus Torvalds: Rust will go into Linux 6.1

At the Kernel Maintainers Summit, the question wasn't, "Would Rust make it into Linux?" Instead, it was, "What to do about its compilers?"

LinuxSecurity.com Team
Sep 30, 2022

The Next Deep Magic Linux Program to Change the World? Io_uring

A few years ago developers knew eBPF as a handy way to build firewalls yet now it's used everywhere for everything. Get ready for io_uring to do the same.

LinuxSecurity.com Team
Sep 30, 2022

GNU Toolchain Plans Move To The Linux Foundation's Infrastructure

The GCC compiler and related GNU toolchain infrastructure has long been hosted by Sourceware.org that has been sponsored by Red Hat the past two decades. But now the GNU Toolchain Infrastructure (GTI) project is being established as it works to leverage the Linux Foundation's IT services to provide more robust and secure infrastructure for these critical open-source projects.

LinuxSecurity.com Team
Sep 30, 2022

Wolfi is a Linux Un(distro) Built for Software Supply Chain Security

Wolfi is a Linux undistro that focuses on resolving security issues with the software supply chain. Explore more here.

LinuxSecurity.com Team
Sep 30, 2022

8 Notable Open-Source Security Initiatives of 2022

Open-source security has been high on the agenda this year, with a number of initiatives, projects, and guidance launched in 2022 to help improve the cyber resiliency of open-source code, software and development.

LinuxSecurity.com Team
Sep 25, 2022

Following Retbleed, The Combined CPU Security Mitigation Impact For AMD Zen 2 / Ryzen 9 3950X

Following the July disclosure of the Retbleed CPU security vulnerability affecting older processors and an AMD change made in August, here is a fresh look at the performance impact of the Retbleed mitigations on Linux, including if opting for the IBPB-based Retbleed mitigation, and the accumulated CPU security mitigation impact for Zen 2 with the flagship Ryzen 9 3950X processor.

LinuxSecurity.com Team
Sep 11, 2022

Linux 6.1 Default Kernel Config To Warn At Boot Of W+X Mappings

A change queued up as part of the "x86/mm" TIP changes expected to land for Linux 6.1 will now have the default kernel configuration warn at kernel boot time around any W+X mappings that pose a security risk.

LinuxSecurity.com Team
Sep 11, 2022

Secure Open Source Rewards Program Launched to Help Protect Critical Upstream Software

SOS.dev initiative will combat software supply chain attacks by encouraging researchers to suggest security improvements to key projects.

LinuxSecurity.com Team
Aug 19, 2022

Security Projects - Page 7

The End of the Road for Linux 6.11: A Call to Upgrade to Kernel 6.12

Exploring Arch Linux 2024.12.01: Security Implications & Notable Enhancements for Linux Admins

Deck the Halls with Enhanced Security: Linux Kernel 6.13's Top Features & Improvements