Viridian STIMER division by zero

ISSUE DESCRIPTION The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a DE fault. IMPACT Enabling Viridian STIMERs to unprivileged HVM guests can result in a Denial of Service DoS affecting the entire...

PoD: Don't try to reclaim special pages

ISSUE DESCRIPTION A guest started with Populated on Demand enabled PoD can attempt to reclaim pages which aren't regular guest RAM. This can cause corruption of memory management state in Xen. IMPACT A buggy or malicious guest can cause corruption of Xen's state, leading to crashes or other...

ALPINE-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-2026-42486 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

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:...

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 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-2026-23560

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-2026-23559 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:...

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

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...

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:...

SUSE SLES15: xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc (SUSE-SU-2026:2613-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2613-1 advisory. This update for xen fixes the following issues - CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. - CVE-2026-42487:...

Security update for xen

This update for xen fixes the following issues CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. CVE-2026-42487: x86 HVM I/O port list traversal bsc1266952. CVE-2026-42488: x86: mismatched mapcache metadata bsc1266955. CVE-2026-42489,CVE-2026-42490: domctl lock open to abuse...

CVE-2026-42487

CVE-2026-42487 concerns the Xen hypervisor’s handling of x86 HVM I/O port list traversal. The root cause stated in the sources is that traversal of the linked list used for guest I/O port accesses requires synchronization with updates to the translation/mapping (XEN_DOMCTL_ioport_mapping), but th...

SUSE-SU-2026:2328-1 Security update for xen

This update for xen fixes the following issues: - CVE-2026-42487: x86 HVM I/O port list traversal bsc1266952. - CVE-2026-42488: x86: mismatched mapcache metadata bsc1266955. - CVE-2026-42489,CVE-2026-42490: domctl lock open to abuse bsc1266953...

MINI-4V25-HVM2-HP78

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PT-2026-27499

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Xen privcmd driver allows user space processes to issue arbitrary hypercalls. Normally, access is limited to root and the hypervisor denies hypercalls affecting other domains. Howeve...