How to Remove a XenServer Slave when it No Longer Exists in the Pool

XenCenter shows the red icon of the XenServer Slave that no longer exists in the pool.You want to eliminate that XenServer Slave but you receive the following error message when you issue the command from XenServer Master xe host-forget of that Slave. "This host cannot be forgotten because there...

XenServer in High Availability Enabled Pool is Unresponsive and Does not Self-Fence

A XenServer in a High Availability enabled pool is unresponsive. The Virtual Machines on that host might not work, or are unable to stop, or unable to migrate any Virtual Machines...

Troubleshooting Linux Virtual Machines in XenServer

This article describes about troubleshooting Linux virtual machines in XenServer. Serial console was used to access UNIX server consoles and most of the network devices switches, routes. The simplicity of serial port hardware and its universality make them popular. Serial console apart from...

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...

ALSA-2024:4379 Important: gvisor-tap-vsock security update

A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor and is used to provide networking for podman-machine virtual machines. Compared to libslirp, gvisor-tap-vsock brings a configurable DNS server and dynamic port forwarding. Security Fixes:...

USN-6864-2: Linux kernel vulnerabilities

It was discovered that the Intel Data Streaming and Intel Analytics Accelerator drivers in the Linux kernel allowed direct access to the devices for unprivileged users and virtual machines. A local attacker could use this to cause a denial of service. CVE-2024-21823 A security issue was discovere...

USN-6871-1: Linux kernel (HWE) vulnerabilities

It was discovered that the ATA over Ethernet AoE driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. CVE-2023-6270 It was discovered that the Atheros 802.11ac...

Ubuntu: Security Advisory (USN-6873-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2024 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...

Critical: Red Hat Security Advisory: Red Hat OpenStack Platform 17.1.3 (openstack-nova) security update

An update for openstack-nova is now available for Red Hat OpenStack Platform 17.1 Wallaby. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

Google Launches $250,000 kvmCTF Bug Bounty Program for KVM Exploits

Google offers up to $250,000 for finding security holes in KVM, a key technology for virtual machines. This…...

RHEL 8 : Red Hat OpenStack Platform 16.2.6 (RHSA-2024:4273)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2024:4273 advisory. Cinder is the replacement of nova-volume in Folsom and beyond, use d for block storage. OpenStack Image Service code-named Glance provides...

ovn: insufficient validation of BFD packets may lead to denial of service

A flaw was found in the Open Virtual Network OVN. In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service...

UNC3886 Uses Fortinet, VMware 0-Days and Stealth Tactics in Long-Term Spying

The China-nexus cyber espionage actor linked to the zero-day exploitation of security flaws in Fortinet, Ivanti, and VMware devices has been observed utilizing multiple persistence mechanisms in order to maintain unfettered access to compromised environments. "Persistence mechanisms encompassed...

cockpit-machines bug fix update

An update is available for cockpit-machines. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Cockpit component for managing virtual machines. If "virt-install" i...

RLSA-2024:3253 Moderate: virt:rhel and virt-devel:rhel security update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the...

NVIDIA vGPU Software Security Vulnerability

NVIDIA vGPU Software is a management software from NVIDIA, USA, used to provide GPU capabilities to virtual machines. The software supports multiple virtual machines to access the host's GPU, providing graphics performance and application compatibility for virtual machines. A security vulnerabili...

RHEL 9 : gvisor-tap-vsock (RHSA-2024:3830)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2024:3830 advisory. A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor and is used to provide networking for...

Microsoft Azure Data Science Virtual Machines Information Disclosure Vulnerability

Microsoft Azure is a suite of open, enterprise-grade cloud computing platforms from Microsoft Corporation USA. An information disclosure vulnerability exists in Microsoft Azure Data Science Virtual Machines. An attacker can exploit the vulnerability to elevate privileges...

Moderate: gvisor-tap-vsock security and bug fix update

A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor and is used to provide networking for podman-machine virtual machines. Compared to libslirp, gvisor-tap-vsock brings a configurable DNS server and dynamic port forwarding. Security Fixes: golang:...

The vulnerability of the data collection tool for Azure Monitor Agents from virtual machines and physical servers arises from incorrect handling of the link before accessing the file. This allows attackers to escalate their privileges.

The vulnerability of the data collection tool for Azure Monitor Agents, which are used for virtual machines and physical servers, is related to an incorrect definition of the link before accessing the file. Exploiting this vulnerability can allow attackers to enhance their privileges using a...