Linux Virtual Machines are Unable to Boot from DVD on XenServer

On XenServer, a user can run both Linux and Windows virtual machines, and like physical machines, it can be set to boot from various sources. However, when a Linux virtual machine is set to boot from DVD, it can fail with the following error message:...

How to Create a Designated Update Virtual Machine and Add a Host Connection to Hosts Node

This article explains how to create a designated Update Virtual Machine VM and add a host connection to the Hosts node. Note : This article is part 1 of the three articles on how to manage vDisk for automatic updates. 1. CTX137757 – How to Create a Designated Update Virtual machine and adding a...

Error ID: XDDS:A75A86BB When Adding Machines to a Streamed Catalog Error Occurs

While adding machines to a streamed catalog, wizard shows the error“The virtual machine with MAC address xx:xx:xx:xx:xx:xx in the selected Device Collection could not be found on any available connection”. Exception : Citrix.Console.Models.Exceptions.ScriptException The virtual machine CTX2-TTM01...

How to Copy a Virtual Machine From One Storage Repository to Another

This article describes how to copy a virtual machine VM from one type of storage repository to another. The example in this article shows how to copy a VM from local storage to Network File Share NFS storage...

XenServer - Overview of Disaster Recovery Options

This article provides an overview of different backup/restore methods available in XenServer for Virtual Machine Metadata. Background Backup/Restore or Site Recover/Disaster Recovery options in XenServer have evolved over recent product versions. This document briefly explains those options...

How to Export a Virtual Machine to an External USB Drive

This article describes how to export a XenServer Virtual Machine VM to a USB storage device...

UBUNTU-CVE-2024-40953

In the Linux kernel, the following vulnerability has been resolved: KVM: Fix a data race on lastboostedvcpu in kvmvcpuonspin Use READ,WRITEONCE to access kvm-lastboostedvcpu to ensure the loads and stores are atomic. In the extremely unlikely scenario the compiler tears the stores, it's...

kernel: KVM: NULL pointer dereference in kvm_mmu_invpcid_gva

A flaw was found in KVM. With shadow paging enabled if INVPCID is executed with CR0.PG=0, the invlpg callback is not set, and the result is a NULL pointer dereference. This flaw allows a guest user to cause a kernel oops condition on the host, resulting in a denial of service...

Lower Video Transcoding Costs with Dedicated Linode Instances

Discover how to slash video transcoding costs by 33% with dedicated compute instances and learn effective strategies to reduce egress fees and optimize VM utilization...

SUSE CVE-2024-39483

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: WARN on vNMI + NMI window iff NMIs are outright masked When requesting an NMI window, WARN on vNMI support being enabled if and only if NMIs are actually masked, i.e. if the vCPU is already handling an NMI. KVM's ABI fo...

Low: Red Hat Security Advisory: virt:rhel and virt-devel:rhel security and bug fix update

An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide...

PT-2024-31317

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.50 Description A kernel warning was reported when pinning folio in CMA memory when launching SEV virtual machine. The issue occurs due to the misuse of try grab folio in both fast and slow paths, leading to a...

CVE-2024-39696

Evmos is a decentralized Ethereum Virtual Machine chain on the Cosmos Network. Prior to version 19.0.0, a user can create a vesting account with a 3rd party account EOA or contract as funder. Then, this user can create an authorization for the contract.CallerAddress, this is the authorization...

CVE-2024-39696 Evmos vulnerable to exploit of smart contract account and vesting

Evmos is a decentralized Ethereum Virtual Machine chain on the Cosmos Network. Prior to version 19.0.0, a user can create a vesting account with a 3rd party account EOA or contract as funder. Then, this user can create an authorization for the contract.CallerAddress, this is the authorization...

DEBIAN-CVE-2024-6505

A flaw was found in the virtio-net device in QEMU. When enabling the RSS feature on the virtio-net network card, the indirectionstable data within RSS becomes controllable. Setting excessively large values may cause an index out-of-bounds issue, potentially resulting in heap overflow access. This...

CBL Mariner 2.0 Security Update: kata-containers (CVE-2023-41051)

The version of kata-containers installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-41051 advisory. - In a typical Virtual Machine Monitor VMM there are several components, such as boot loader, virtual...

kernel: Reserved fields in guest message responses may not be zero initialized

A flaw was found in some AMD CPUs where the guest message responses have not been zero-initialized. This issue may allow a local attacker with the ability to run arbitrary code on a container or virtual machine to discover sensitive information contained in the host system's memory...

Clang LLVM Code Execution

The vulnerability of Clang’s toolset for developing, optimizing, and compiling software involves an operation that occurs outside the buffer in memory when processing LR registers, due to incorrect code generation. Exploiting this vulnerability allows a remote attacker to execute arbitrary code o...

How to Add a Managed vDisk to the vDisks Node Under vDisk Update Management

This article explains how to add a managed vDisk to the vDisks node under vDisk Update Management. Note: This article is part 2 of the three articles on how to manage vDisk for automatic updates. 1. CTX137757 –How to Create a Designated Update Virtual Machine and Add a Host Connection to vDisk...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the KVM:LAPIC module de-preempting the preemption timer during SETLAPIC...