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Security Patches and the Kernel (Linux)

  • Security updates for Tuesday

    Security updates have been issued by Fedora (community-mysql, crun, java-latest-openjdk, and mupdf), openSUSE (libssh2_org), and SUSE (go1.12, libseccomp, and tar).

  • New ZombieLoad Side-Channel Attack Variant: TSX Asynchronous Abort

    In addition to the JCC erratum being made public today and that performance-shifting Intel microcode update affecting Skylake through Cascade Lake, researchers also announced a new ZombieLoad side-channel attack variant dubbed "TSX Asynchronous Abort" or TAA for short. ZombieLoad / MDS (Microarchitectural Data Sampling) was announced back in May by researchers while today Cyberus Technology has announced a new variant focused on Intel processors with TSX (Transactional Synchronization Extensions). TSX Asynchronous Abort is a new ZombieLoad variant that was actually discovered back as part of Cyberus' originally discoveries but faced an extended embargo.

  • Linux Kernel Gets Mitigations For TSX Aync Abort Plus Another New Issue: iITLB Multihit

    The Linux kernel has just received its mitigation work for the newly-announced TSX Asynchronous Abort (TAA) variant of ZombieLoad plus revealing mitigations for another Intel CPU issue... So today in addition to the JCC Erratum and ZombieLoad TAA the latest is iITLB Multihit (NX) - No eXcuses. The mainline Linux kernel received mitigations for ZombieLoad TAA that work in conjunction with newly-published Intel microcode. The mitigations also now expose /sys/devices/system/cpu/vulnerabilities/tsx_async_abort for reporting the mitigation status plus a new tsx_async_abort kernel parameter. With the TAA mitigation, the system will clear CPU buffers on ring transitions.

  • LinuxBoot Continues Maturing - Now Able To Boot Windows

    LinuxBoot is approaching two years of age as the effort led by Facebook and others for replacing some elements of the system firmware with the Linux kernel. Chris Koch of Google presented at last month's Platform Security Summit 2019 on the initiative. The Platform Security Summit 2019 took place at the start of October at Microsoft's facilities in Redmond. LinuxBoot in recent months has been able to begin booting Windows 10, which is related to the recent reports on kexec'ing Windows from Linux. But not only is Windows booting but VMware and Xen are also now working in a LinuxBoot environment.

Android Leftovers

today's howtos

Volla Phone Promises to Support Ubuntu Touch, Gets Kickstarter Campaign

Founded by Dr. Jörg Wurzer, an experienced entrepreneur with more than 20 years of experience in research and development in user experience, machine learning, natural language processing, artificial intelligence, and product management, Volla Phone promises to be a privacy-focused mobile phone powered by a free and open source operating system. At its heart, the Volla Phone device will use Nemo Mobile, an OS based on the Android Open Source Project (AOSP) promising increased security and privacy features, as well as simplicity for the everyday user. For developers, Volla Phone also promises to support an alternative, free, and open-source operation system like Ubuntu Touch. Read more Also: Ubuntu 18.04.4 LTS- Expected Release Date & More