CVE-2026-31787

XSA-487 / CVE-2026-31787 Linux kernel double free in Xen privcmd driver A double free of kernel memory in the Linux kernel's Xen privcmd driver allows circumvention of kernel lockdown secure boot. Exploitation requires root-level access, which limits the broader security implications...

Citrix-Virtual-Apps-XEN-Exploit

CVE-2024-xxxx Citrix Virtual Apps and Desktops XEN Ejecución remota de código no autenticada Consulta nuestra publicación del blog para obtener detalles técnicos https://github.com/user-attachments/assets/563fd110-5321-49f7-8dc3-48eb0a53e0f9 PoC en Acción root@kitploit: python exploit-citrix-xen....

OPENSUSE-SU-2026:11738-1 xen-4.22.0_04-1.1 on GA media

These are all security issues fixed in the xen-4.22.004-1.1 package on the GA media of openSUSE Tumbleweed...

CVE-2026-62437

A flaw was found in Xen. When a guest virtual machine is terminated, its device model DM can re-establish interrupt request IRQ tracking structures after the initial cleanup. This prevents some of these structures from being properly deallocated, leading to a memory leak. A local attacker with...

CVE-2026-79602

A flaw was found in Xen. A malicious guest operating system, when configured with a PCI device that has a Base Address Register BAR mapped to the I/O port space, can trigger an internal error within the Xen hypervisor. This vulnerability could lead to a denial of service, causing the host system ...

DEBIAN-CVE-2026-79602

A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen...

CVE-2026-79603

x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...

CVE-2026-79602

A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen...

CVE-2026-62437

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

CVE-2026-79603

Xen hypervisor x86 PV (para-virtualized) guests can free memory pages while retaining a stale TLB entry pointing to them. Xen issues a TLB flush only when a freed page is re-used , not at the time of freeing. Because the page can be scrubbed (zeroed or reassigned) before that TLB flush occurs, a ...

CVE-2026-79603 Unconditionally do TLB flushing ahead of page scrubbing

x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...

EUVD-2026-72721

x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...

EUVD-2026-72720

A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen...

CVE-2026-79602 x86: improper handling of HVM emulation return codes

A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen...

CVE-2026-79602

CVE-2026-79602 is a vulnerability in the Xen hypervisor (x86) caused by improper handling of HVM emulation return codes. A guest with a PCI device assigned that has at least a BAR mapped to the I/O port space can trigger a BUG() in Xen, leading to a denial of service where the host becomes unresp...

EUVD-2026-72719

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

UBUNTU-CVE-2026-62437

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

UBUNTU-CVE-2026-79602

improper handling of HVM emulation return codes: A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen. A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen. Xen versions 4.6 and later are...

CVE-2026-79602

improper handling of HVM emulation return codes: A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen. A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG in Xen. Xen versions 4.6 and later are...

CVE-2026-62437

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...