CVE-2025-58149 Incorrect removal of permissions on PCI device unplug

When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allo...

CVE-2025-58149

The Xen hypervisor is vulnerable to a permission leak in the libxl detach logic when passing through PCI devices . The root cause is the failure to remove access permissions to 64-bit memory BARs when a device is no longer assigned to a domain. This allows a PV domain to map leaked memory into it...

kernel: Revert "sched/fair: Make sure to try to detach at least one movable task"

In the Linux kernel, the following vulnerability has been resolved: Revert "sched/fair: Make sure to try to detach at least one movable task" This reverts commit b0defa7ae03ecf91b8bfd10ede430cff12fcbd06. b0defa7ae03ec changed the load balancing logic to ignore env.maxloop if all tasks examined to...