Ubuntu: Security Advisory (USN-5703-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 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...

Citrix Hypervisor Security Bulletin for CVE-2022-33748 & CVE-2022-33749

Several security issues have been identified in Citrix Hypervisor 8.2 LTSR CU1. These are: A malicious privileged user in a guest VM working in collaboration with a malicious privileged user in another guest VM can cause the host to crash or become unresponsive. This issue has the following CVE...

CVE-2022-0171

A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root host user-level application to crash the host kernel by creating a confidential guest VM instance in AMD CPU that supports Secure Encrypted Virtualization SEV...

CVE-2022-0171

A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root host user-level application to crash the host kernel by creating a confidential guest VM instance in AMD CPU that supports Secure Encrypted Virtualization SEV...

Citrix Hypervisor Security Bulletin for CVE-2022-33745

A security issue has been identified in Citrix Hypervisor 7.1 LTSR CU2 that may allow privileged code in a PV guest VM to fail to perform management operations. The issue has the following CVE identifier: CVE-2022-33745...

CVE-2022-31609

NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager vGPU plugin, where it allows the guest VM to allocate resources for which the guest is not authorized. This vulnerability may lead to loss of data integrity and confidentiality, denial of service, or information disclosure...

CVE-2022-31609

NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager vGPU plugin, where it allows the guest VM to allocate resources for which the guest is not authorized. This vulnerability may lead to loss of data integrity and confidentiality, denial of service, or information disclosure...

CVE-2022-31609

NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager vGPU plugin, where it allows the guest VM to allocate resources for which the guest is not authorized. This vulnerability may lead to loss of data integrity and confidentiality, denial of service, or information disclosure...

Design/Logic Flaw

Failure to assign a new report ID to an imported guest may potentially result in an SEV-SNP guest VM being tricked into trusting a dishonest Migration Agent MA...

CVE-2021-26349

Failure to assign a new report ID to an imported guest may potentially result in an SEV-SNP guest VM being tricked into trusting a dishonest Migration Agent MA...

CVE-2021-26349

CVE-2021-26349 is listed as part of multiple SUSE kernel-firmware advisories (SUSE-SU-2022-1923-1 and related updates). The description indicates a vulnerability where failure to assign a new report ID to an imported guest could allow an SEV-SNP guest VM to be tricked into trusting a malicious Mi...

CVE-2021-26342

CVE-2021-26342 is documented in the SUSE kernel-firmware advisories as part of a set of AMD/SEV-related fixes. The vulnerability description states that in SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) after a sequence including creation of a new VMCB, causing th...

Information disclosure

Multiple vulnerabilities in Cisco Enterprise NFV Infrastructure Software NFVIS could allow an attacker to escape from the guest virtual machine VM to the host machine, inject commands that execute at the root level, or leak system data from the host to the VM. For more information about these...

CVE-2022-20779 Cisco Enterprise NFV Infrastructure Software Vulnerabilities

Multiple vulnerabilities in Cisco Enterprise NFV Infrastructure Software NFVIS could allow an attacker to escape from the guest virtual machine VM to the host machine, inject commands that execute at the root level, or leak system data from the host to the VM. For more information about these...

CVE-2021-20257

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits tx descriptors in processtxdesc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial o...

Citrix Hypervisor Security Update

Several security issues have been identified in Citrix Hypervisor, that may each allow privileged code in a guest VM to cause the host to crash or become unresponsive. These issues have the following identifiers: CVE-2021-28704 CVE-2021-28705 CVE-2021-28714 CVE-2021-28715 All of these issues affe...

CVE-2021-26340

A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside Buffer TLB resulting in unexpected behavior inside the virtual machine VM...

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...

Citrix Hypervisor Security Update

Several security issues have been discovered in Citrix Hypervisor that, collectively, may allow privileged code in a guest VM to compromise or crash the host. These issues have the following identifiers: CVE-ID| Description| Pre-requisites ---|---|--- CVE-2021-28694| Host denial of service|...

Citrix Hypervisor Security Update

Several security issues have been identified that affect Citrix Hypervisor: Two issues, each of which may each allow privileged code in a guest VM to cause the host to crash or become unresponsive. These two issues only affect systems where the malicious guest VM has a physical PCI device passed...