CVE-2026-42493 x86 shadow paging is deprecated

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

MINI-M8CW-8R22-PVG9

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CVE-2025-27464

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

CVE-2025-27464

CVE-2025-27464 is part of a XenServer/Citrix Hypervisor set of flaws affecting Windows guest VMs. The root cause is that the XenServer VM Tools for Windows (XenServer VM Tools, Windows) before version 9.4.1 expose devices/facilities without proper security descriptors, enabling an unprivileged gu...

CVE-2025-27464

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

CVE-2025-27464 WinPVDrivers: Excessive permissions on user-exposed devices

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

EUVD-2025-210445

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

CVE-2025-27464 WinPVDrivers: Excessive permissions on user-exposed devices

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

CVE-2025-27463

The CVE-2025-27463 entry corresponds to the Windows PV drivers exposed by XenServer/Citrix Hypervisor. These PV devices (XenCons, XenIface, XenBus) reportedly expose facilities to userspace with no security descriptors, making them fully accessible to unprivileged users. The connected sources ide...

CVE-2025-27462

CVE-2025-27462 refers to the Windows PV drivers in XenServer/Citrix Hypervisor where several PV interfaces (XenCon s, XenIface, XenBus) expose no security descriptors, making them accessible to unprivileged users. The CVE is tied to the Windows PV drivers for XenServer 8.x; Linux guests are unaff...

GHSA-QCCW-WMVP-8PV9 vulnerabilities

Vulnerabilities for packages: chromium...

Astra Linux – Vulnerability in Linux

A issue was discovered in the Linux kernel versions 2.6.39 through 5.10.16, as used in Xen. The block, net, and SCSI backends consider certain errors as ordinary bugs, which are deliberately designed to cause kernel crashes. For errors that may be influenced by guests such as memory exhaustion...

Astra Linux – Vulnerability in Linux

A issue was discovered in the Linux kernel versions 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur during batch hypercalls, where multiple operations are performed in a single hypercall. The success or failure of each operation is reported to the backend driver, and the...

Astra Linux – Vulnerability in Linux

A issue was discovered in the Linux kernel versions 3.11 through 5.10.16, as used by Xen. When serving requests to the PV backend, the driver maps grant references provided by the frontend. During this process, errors may occur. In one case, an error encountered earlier might be discarded by late...

Astra Linux – Vulnerability in Linux

A issue was discovered in the Linux kernel through version 5.10.1, as used with Xen up to version 4.14.x. The Linux kernel’s PV block backend expects the kernel thread handler to reset ring-xenblkd to NULL when the thread is stopped. However, the handler may not have enough time to execute if the...

MINI-W46X-6PV2-5WR8

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MINI-CGQQ-47MW-5PV2

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UBUNTU-CVE-2026-9516

Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws. To skip a leading 3-byte UTF-8 BOM, decodejson advances the input scalar's string pointer past the mark with SvPVset and restores it only on the normal return...

CVE-2026-9516

Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws. To skip a leading 3-byte UTF-8 BOM, decodejson advances the input scalar's string pointer past the mark with SvPVset and restores it only on the normal return...

Astra Linux – Vulnerability in Linux 5.10, Linux

Several Linux PV device frontends are vulnerable to attacks by backends that use grant table interfaces to remove access rights from resources. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The backends that use these interfaces may n...