CVE-2026-42486

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23562

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23560

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23559

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-42486 Multiple RBAC issues in XAPI

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-42486

Summary: CVE-2026-42486 is documented as a RBAC-related vulnerability in XAPI. Several CVEs describe over-permissive admin roles; specifically, CVE-2026-42486 states that a vm-admin can set VM.platform:hvm_serial, a setting that should be pool-admin restricted, and this can allow arbitrary dom0 f...

EUVD-2026-42608

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23562

The CVE-2026-23562 entry concerns RBAC mis-configuration in XAPI. The advisory notes that the PCI passthrough configuration was normally restricted to pool-admin, but one API did not enforce this check, allowing a vm-admin to access unintended host hardware. This is described alongside related RB...

CVE-2026-23561 Multiple RBAC issues in XAPI

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

EUVD-2026-42604

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

EUVD-2026-42603

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23560

Summary: The CVE-2026-23560 issue is described in multiple sources as a RBAC-related vulnerability in XAPI for XenServer/XCP-ng where a vm-admin can modify VM.other-config:is_system_domain to mark a VM as a system domain. This can cause system domains to be ignored or hidden during certain host/p...

CVE-2026-23560 Multiple RBAC issues in XAPI

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

EUVD-2026-42602

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23559 Multiple RBAC issues in XAPI

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. XAPI can configure different users with different roles, using Role Based Access Control. For more details, see:...

CVE-2026-23559

CVE-2026-23559 (and related RBAC issues 23560–23562, 42486) affect XAPI in XenServer/XCP-ng where a vm-admin can abuse RBAC to gain higher privileges, including arbitrary read/modify of dom0 files via VBD.other_config, alter system-domain status, disrupt PBD/storage-domain mappings, and potential...

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...

Astra Linux – Vulnerability in Linux 5.10, Linux

Guests running on Arm can cause Denial of Service DoS attacks on Dom0 through PV devices. When mapping memory pages of guests on Arm, Dom0 uses an rbtree to keep track of the foreign mappings. The update of this rbtree does not always occur completely with the relevant lock held; this results in ...

Multiple RBAC issues in XAPI

ISSUE DESCRIPTION XAPI can configure different users with different roles, using Role Based Access Control. For more details, see: https://docs.xenserver.com/en-us/xencenter/current-release/rbac-overview.htmlrbac-roles The pool-admin role is fully privileged. Notably, users with this role can als...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004077)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004077 advisory. An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/eventsbase.c allows event-channel removal during the...