CVE-2025-27462

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

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

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-2025-27463

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-2025-27463 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-2025-210444

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-2025-27462

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...

CVE-2025-27462 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-2025-210443

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...

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 in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

SUSE CVE-2026-45890

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

CVE-2026-45890

A flaw was found in the Linux kernel's xen-netback component. A malicious or buggy Xen guest can exploit this by writing a zero value to the 'multi-queue-num-queues' xenbus key. This improper input validation can trigger a warning in the kernel's memory allocation, leading to a guest-to-host Deni...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15, and Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: xenbus: Use kref to track the lifetime of requests. Marek reported seeing a NULL pointer fault in the xenbusthread call stack: BUG: NULL pointer dereferencing in the kernel; address: 0000000000000000 RIP:...

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 in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

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 in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

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 in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

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 in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021627)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021627 advisory. In the Linux kernel, the following vulnerability has been resolved: xen: Fix the issue of resource not being properly released in xenbusdevprobe This patch fixes an...