CVE-2026-42488

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache...

EUVD-2026-37891

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache...

CVE-2026-42488

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache...

CVE-2026-42488

CVE-2026-42488 concerns the Xen hypervisor. Some shadow paging error paths can switch page-tables without updating the running vCPU reference, causing a mismatch between loaded page-tables and mapcache metadata and potentially leading to mapcache corruption. Affected products/versions are implied...

CVE-2026-42488 x86: mismatched mapcache metadata

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache...

CVE-2026-42488

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache...

Fedora 44 : xen (2026-24b84f97af)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-24b84f97af advisory. x86 HVM I/O port list traversal XSA-491, CVE-2026-42487 domctl lock open to abuse XSA-492, CVE-2026-42489, CVE-2026-42490 Arm: Completion of memory...

SUSE SLES15 Security Update : xen (SUSE-SU-2026:2328-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2328-1 advisory. - CVE-2026-42487: x86 HVM I/O port list traversal bsc1266952. - CVE-2026-42488: x86: mismatched mapcache metadata bsc1266955. -...

SUSE SLES15 Security Update : xen (SUSE-SU-2026:2329-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2329-1 advisory. - CVE-2026-42487: x86 HVM I/O port list traversal bsc1266952. - CVE-2026-42488: x86: mismatched mapcache metadata bsc1266955. -...

Xen: x86 Mismatched Mapcache Metadata (XSA-494)

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache. This can result in privilege escalation, Denial of Servi...

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. Special Instructions and Notes: Please reboot the system...

SUSE-SU-2026:2364-1 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...

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. Special Instructions and Notes: Please reboot the system...

SUSE-SU-2026:2329-1 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...

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...

x86: mismatched mapcache metadata

ISSUE DESCRIPTION Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache. IMPACT Privilege escalation, Denial of...

PT-2026-48244

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. 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...

PT-2026-48242

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description Certain shadow paging error paths switch page-tables without updating the currently running vCPU reference. This creates a mismatch between the loaded page-table...

PT-2026-48241

Name of the Vulnerable Software and Affected Versions Xen affected versions not specified Description HVM guest I/O port accesses require either emulation or translation. These translations are managed by the device model through 'XEN DOMCTL ioport mapping'. The linked list used for these...