Astra Linux – Vulnerability in Xen

A issue was discovered in Xen versions 4.9 through 4.14.x. On the ARM architecture, a guest can control whether memory accesses bypass the cache. This means that Xen needs to ensure that all writes such as those during scrubbing have reached the memory before handing over the page to the guest...

domctl lock open to abuse

ISSUE DESCRIPTION To create and manage guests, domctl operations are used by the control domain, a possible Xenstore domain, or by a domain controlling a particular guest. Some of these operations may not be executed in parallel, so a system-wide lock is used. The way that lock is acquired is,...

x86: CPU Opcode Cache corruption

ISSUE DESCRIPTION AMD have disclosed a potential vulnerability in certain CPUs which can cause instructions to execute at a higher privilege. For more information, see: https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7052.html IMPACT Code of any privilege could escalate to a...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001959)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001959 advisory. Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause...

EUVD-2016-7189

Malware in sbrugna...

EUVD-2015-7710

Malware in sbrugna...

EUVD-2015-7868

Malware in sbrugna...

EUVD-2012-5518

Malware in sbrugna...

EUVD-2013-4413

Malware in sbrugna...

EUVD-2015-2846

Malware in sbrugna...

EUVD-2013-4293

Malware in sbrugna...

EUVD-2013-2057

Malware in sbrugna...

EUVD-2014-3953

Malware in sbrugna...

EUVD-2014-1955

Malware in sbrugna...

EUVD-2015-4130

Malware in sbrugna...

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...

Arm issues with page refcounting

ISSUE DESCRIPTION There are two issues related to the mapping of pages belonging to other domains: For one, an assertion is wrong there, where the case actually needs handling. A NULL pointer de-reference could result on a release build. This is CVE-2025-58144. And then the P2M lock isn't held...

The Ocaml xenstored implementation (oxenstored) in Xen 4.1.x, 4.2.x, and 4.3.x allows local guest domains to cause a denial of service (domain shutdown) via a large message reply.

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Linux Distros Unpatched Vulnerability : CVE-2020-25599

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in Xen through 4.14.x. There are evtchnreset race conditions. Uses of EVTCHNOPreset potentially by a guest on itself or XENDOMCTLsoftres...

Linux Distros Unpatched Vulnerability : CVE-2020-25601

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows...