domctl lock open to abuse

ISSUE DESCRIPTION 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 operations may not be executed in parallel, so a system-wide lock is used. The way that lock is acquired is,...

PT-2026-48244

Xen Security Advisory 491 v2 CVE-2026-42487 - x86 HVM I/O port list traversal https://t.co/7hx98zLphA Xen Security Advisory 492 v3 CVE-2026-42489,CVE-2026-42490 - domctl lock open to abuse https://t.co/UjjzqPoVni Xen Security Advisory 493 v2 CVE-2025-10263 - Arm: Completion of memory accesses not...

PT-2026-48241

Xen Security Advisory 491 v2 CVE-2026-42487 - x86 HVM I/O port list traversal https://t.co/7hx98zLphA Xen Security Advisory 492 v3 CVE-2026-42489,CVE-2026-42490 - domctl lock open to abuse https://t.co/UjjzqPoVni Xen Security Advisory 493 v2 CVE-2025-10263 - Arm: Completion of memory accesses not...