CVE-2025-27466

A NULL pointer dereference vulnerability exists in Xen’s viridian implementation when updating the reference TSC area. A malicious x86 HVM guest with the referencetsc viridian extension enabled could trigger this flaw, resulting in a host denial of service crash. Mitigation Disabling the...

UBUNTU-CVE-2025-58143

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference...

CVE-2025-27466 Mutiple vulnerabilities in the Viridian interface

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference...

CVE-2025-58142 Mutiple vulnerabilities in the Viridian interface

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference...

CVE-2025-58143 Mutiple vulnerabilities in the Viridian interface

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference...

Xen 安全漏洞

Xen is an open source virtual machine monitor product from Xen Open Source. The product enables different and incompatible operating systems to run on the same computer and supports migration at runtime to ensure uptime and avoid downtime. A security vulnerability exists in Xen that stems from...

Mutiple vulnerabilities in the Viridian interface

ISSUE DESCRIPTION There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference TSC area. This is CVE-2025-27466. 2. A NULL pointer dereference by assuming the SIM page is mapped when a...

PT-2025-37186

Name of the Vulnerable Software and Affected Versions: The product name cannot be determined. affected versions not specified Description The vulnerability is awaiting analysis. Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability...