Security Bulletin: The PowerVM hypervisor is vulnerable to a specially crafted sequence of hypervisor calls from a partition that can lead to a system crash

Summary An attacker that gains total control of a virtual machine running on the PowerVM hypervisor could issue a specially crafted sequence of hypervisor calls that will lead to a system crash and and an outage of all virtual machines running on the same system Vulnerability Details CVEID:...

[SECURITY] [DSA 4977-1] xen security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4977-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff September 20, 2021 https://www.debian.org/security/faq -...

IBM PowerVM Hypervisor 注入漏洞

IBM PowerVM Hypervisor is an application from Universal Business Machines IBM, Inc. Providing a secure and scalable virtualized environment, these applications are built on the advanced RAS features and leading performance of the Power Systems platform. A security vulnerability exists in IBM...

The vulnerability of the libxl__domain_suspend_state structure in Xen hypervisors lies in the lack of resource initialization, which allows attackers to trigger a service failure.

The vulnerability of the libxldomainsuspendstate structure in Xen hypervisors stems from the fact that this structure does not utilize the standard initialization and deallocation mechanism. Exploiting this vulnerability could allow an attacker to cause a service failure...

Fedora: Security Advisory for xen (FEDORA-2021-11577e5229)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; you can...

Ubuntu: Security Advisory (USN-5073-2)

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...

[SECURITY] Fedora 33 Update: xen-4.14.2-4.fc33

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

USN-5073-2: Linux kernel (GCP) vulnerabilities

Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM to disable restrictions on VMLOAD/VMSAVE in a nested guest. An attacker in a guest VM could use this to read or write portions of the host's physical memory...

Ubuntu: Security Advisory (USN-5082-1)

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...

USN-5082-1: Linux kernel (OEM) vulnerabilities

Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM to disable restrictions on VMLOAD/VMSAVE in a nested guest. An attacker in a guest VM could use this to read or write portions of the host's physical memory...

(0Day) Parallels Desktop virtio-net Memory Corruption Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the...

LSN-0081-1: Kernel Live Patch Security Notice

Maxim Levitsky discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not properly prevent a guest VM from enabling AVIC in nested guest VMs. An attacker in a guest VM could use this to write to portions of the host's physical memory.CVE-2021-3653 Maxim...

Ubuntu: Security Advisory (USN-5073-1)

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...

Denial Of Service (DoS)

xen:edge is vulnerable to denial of service. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, are de-allocated when a guest switches back from v2 to v1. Freeing such pages requires that the hypervisor enforce that...

USN-5073-1: Linux kernel vulnerabilities

Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM to disable restrictions on VMLOAD/VMSAVE in a nested guest. An attacker in a guest VM could use this to read or write portions of the host's physical memory...

Citrix Releases Security Updates for Hypervisor

Citrix has released security updates to address vulnerabilities in Hypervisor. An attacker could exploit these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Citrix Security Update CTX325319 and apply the necessary updates. This product i...

Ubuntu: Security Advisory (USN-5072-1)

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...

Fedora: Security Advisory for xen (FEDORA-2021-4f129cc0c1)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; you can...

Hotfix XS82E033 - For Citrix Hypervisor 8.2

Who Should Install This Hotfix? This is a hotfix for customers running Citrix Hypervisor 8.2. Information About this Hotfix Component| Details ---|--- Prerequisite| None Post-update tasks| None Content live patchable| No Baselines for Live Patch| N/A Revision History| Published on Sep 09, 2021...

Vulnerabilities fixed in Citrix Hypervisor

Vulnerabilities have been fixed in the Citrix Hypervisor. The vulnerabilities allow a malicious person with administrator privileges within the guest VM to cause a denial-of-service on the host and execute arbitrary code. Citrix has released updates to fix the vulnerabilities. More information ca...