An EPYC escape: Case-study of a KVM breakout

Posted by Felix Wilhelm, Project Zero Introduction KVM for Kernel-based Virtual Machine is the de-facto standard hypervisor for Linux-based cloud environments. Outside of Azure, almost all large-scale cloud and hosting providers are running on top of KVM, turning it into one of the fundamental...

PT-2021-4122

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.12.13 Description The issue is related to a NULL pointer dereference in the arch/powerpc/perf/core-book3s.c file of the Linux kernel. This can be exploited by local users to cause a denial of service perf...

SUSE: Security Advisory (SUSE-SU-2018:1482-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE: Security Advisory (SUSE-SU-2019:1744-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE: Security Advisory (SUSE-SU-2019:0423-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE: Security Advisory (SUSE-SU-2014:1211-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

GSD-2021-1000409 powerpc/64s: Fix crashes when toggling entry flush barrier

powerpc/64s: Fix crashes when toggling entry flush barrier This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.120 by commit...

UVI-2021-1000453 powerpc/64s: Fix pte update for kernel memory on radix

powerpc/64s: Fix pte update for kernel memory on radix This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.191 by commit...

UVI-2021-1000262 powerpc: Fix HAVE_HARDLOCKUP_DETECTOR_ARCH build configuration

powerpc: Fix HAVEHARDLOCKUPDETECTORARCH build configuration This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.4 by commit...

GSD-2021-1000489 powerpc/64s: Fix crashes when toggling entry flush barrier

powerpc/64s: Fix crashes when toggling entry flush barrier This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.4.269 by commit...

GSD-2021-1000444 powerpc/64s: Fix crashes when toggling entry flush barrier

powerpc/64s: Fix crashes when toggling entry flush barrier This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.191 by commit...

GSD-2021-1000453 powerpc/64s: Fix pte update for kernel memory on radix

powerpc/64s: Fix pte update for kernel memory on radix This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.191 by commit...

GSD-2021-1000322 powerpc/64s: Fix crashes when toggling entry flush barrier

powerpc/64s: Fix crashes when toggling entry flush barrier This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.38 by commit...

GSD-2021-1000427 powerpc: Fix HAVE_HARDLOCKUP_DETECTOR_ARCH build configuration

powerpc: Fix HAVEHARDLOCKUPDETECTORARCH build configuration This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.119 by commit...

UVI-2021-1000427 powerpc: Fix HAVE_HARDLOCKUP_DETECTOR_ARCH build configuration

powerpc: Fix HAVEHARDLOCKUPDETECTORARCH build configuration This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.119 by commit...

UVI-2021-1000233 powerpc/64: Fix the definition of the fixmap area

powerpc/64: Fix the definition of the fixmap area This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.4 by commit...

UVI-2021-1000425 powerpc/64s: Fix pte update for kernel memory on radix

powerpc/64s: Fix pte update for kernel memory on radix This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.119 by commit...

UVI-2021-1000362 powerpc/64s: Fix pte update for kernel memory on radix

powerpc/64s: Fix pte update for kernel memory on radix This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.37 by commit...

GSD-2021-1000471 powerpc: Fix HAVE_HARDLOCKUP_DETECTOR_ARCH build configuration

powerpc: Fix HAVEHARDLOCKUPDETECTORARCH build configuration This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.233 by commit...

GSD-2021-1000205 powerpc/64s: Fix crashes when toggling entry flush barrier

powerpc/64s: Fix crashes when toggling entry flush barrier This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.5 by commit...