qemu/xen/kvm: ioemu: Fix PVFB backend to limit frame buffer size

The backend for XenSource Xen Para Virtualized Frame Buffer PVFB in Xen ioemu does not properly restrict the frame buffer size, which allows attackers to cause a denial of service crash by mapping an arbitrary amount of guest memory...

CVE-2008-1952

The backend for XenSource Xen Para Virtualized Frame Buffer PVFB in Xen ioemu does not properly restrict the frame buffer size, which allows attackers to cause a denial of service crash by mapping an arbitrary amount of guest memory...

CVE-2008-1952: Improper Restriction of Operations within the Bounds of a Memory Buffer

The backend for XenSource Xen Para Virtualized Frame Buffer PVFB in Xen ioemu does not properly restrict the frame buffer size, which allows attackers to cause a denial of service crash by mapping an arbitrary amount of guest memory...

CVE-2008-1943: Improper Restriction of Operations within the Bounds of a Memory Buffer

Buffer overflow in the backend of XenSource Xen Para Virtualized Frame Buffer PVFB 3.0 through 3.1.2 allows local users to cause a denial of service crash and possibly execute arbitrary code via a crafted description of a shared framebuffer...