DEBIAN-CVE-2026-42487

HVM guest I/O port accesses are subject to either emulation or at least translation. Translations are managed by the device model via XENDOMCTLioportmapping, and hence the linked list used may changed at any time. Traversal of those lists while handling guest I/O port accesses therefore needs...

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 SLED15 / SLES15 Security Update : xen (SUSE-SU-2026:2364-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2364-1 advisory. - CVE-2026-42487: x86 HVM I/O port list traversal bsc1266952. - CVE-2026-42488: x86: mismatched mapcache...

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...