5720 matches found
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...
Hotfix XS82E029 - 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 Jun 28, 2021...
Citrix Releases Security Updates for Hypervisor
Citrix has released security updates to address vulnerabilities in Hypervisor. An attacker could exploit these vulnerabilities to cause a denial-of-service condition. CISA encourages users and administrators to review Citrix Security Update CTX316325 and apply the necessary updates. This product ...
Citrix Hypervisor Security Update
Two security issues have been identified in Citrix Hypervisor 8.2 LTSR, each of which may allow privileged code in a guest VM to cause the host to crash or become unresponsive. These issues only affect Citrix Hypervisor 8.2 LTSR. These issues have the following CVE identifiers: CVE-2021-3416...
The vulnerability of the Oxenstored process in the Xen hypervisor allows a attacker to trigger a service failure.
The vulnerability of the Oxenstored hypervisor in Xen relates to the allocation of unlimited memory. Exploiting this vulnerability can allow an attacker to cause a service failure...
Hotfix XS82E025 - For Citrix Hypervisor 8.2
Who Should Install This Hotfix? This is a hotfix for customers running Citrix Hypervisor 8.2. All customers who are affected by the issues described inCTX316325 - Citrix Hypervisor Multiple Security Updatesshould install this hotfix. Information About this Hotfix Component| Details ---|---...
The vulnerability of Xen hypervisors, related to pointer swapping errors, allows a perpetrator to cause a service failure.
The vulnerability of Xen hypervisors is related to pointer arithmetic errors. Exploiting this vulnerability can allow an attacker to cause a service failure...
The vulnerability of Xen hypervisors, related to memory release errors, allows a hacker to cause a service failure.
The vulnerability of the Xen hypervisor implementation is related to memory release errors. Exploiting this vulnerability can allow an attacker to cause a service failure by using the XSRESETWATCHES request...
The vulnerability of Xen hypervisors, caused by uncontrolled recursion, allows attackers to trigger an emergency shutdown of the application.
The vulnerability of the Xen hypervisor is caused by an uncontrolled recursion. Exploiting this vulnerability can allow an attacker to cause the application to terminate abnormally...
The vulnerability of Xen hypervisors, related to the provision of unlimited memory, allows a attacker to cause a service failure.
The vulnerability of Xen hypervisors relates to the provision of unlimited memory. Exploiting this vulnerability can allow an attacker to cause a service failure...
Driver Disk for Avago mpt3sas 38.00.00.00 - For Citrix Hypervisor 8.2 LTSR
Who Should Install this Driver Disk? Customers running the Citrix Hypervisor 8.2 LTSR release who use Avago's mpt3sas driver and wish to use the latest version of the following: Driver Module| Version ---|--- mpt3sas| 38.00.00.00 Issues Resolved In this Driver Disk Includes general enhancements a...
Citrix Hypervisor 8.2 unable to load 2nd HBA card
Jun 4 15:46:50 hostname kernel: 75.692775 xen: -- pirq=85 - irq=85 gsi=85Jun 4 15:46:50 hostname kernel: 75.692987 Failed to setup GSI :85, errcode:-28Jun 4 15:46:50 hostname kernel: 75.928523 lpfc 0000:87:00.1: 3:6101 Disabling NVME support: Not supported by firmware: 1 1Jun 4 15:46:50 hostname...
Hotfix XS82E028 - 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 Jun 21, 2021...
[SECURITY] Fedora 33 Update: xen-4.14.2-2.fc33
This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...
Debian: Security Advisory (DSA-4931-1)
The remote host is missing an update for the Debian 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 34 Update: xen-4.14.2-2.fc34
This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...
Debian DSA-4931-1 : xen - security update
Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service or information leaks. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from Debian Security Advisory DSA-4931. The...
TLB Poisoning Attacks on AMD Secure Encrypted Virtualization (SEV)
Bulletin ID: AMD-SB-1023 Potential Impact: Loss of Integrity, Confidentiality and Availability Summary A malicious hypervisor HV along with an unprivileged process controlled by an attacker and executing in a guest VM, may maliciously control the process of flushing the Translation Lookaside Buff...
CVE-2021-28687
HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...