An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel"s KVM hypervisor handled the "KVM_GET_EMULATED_CPUID" ioctl request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the "/dev/kvm" device could use this flaw to crash the system, resulting in a denial of service.