{"id":"CVE-2026-98470","published":"2026-10-18T16:16:57.507","lastModified":"2026-10-19T10:18:57.220","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Don't WARN on an unknown VM ioctl in protected mode\n\nkvm_pkvm_ioctl_allowed() WARNs when kvm_get_cap_for_kvm_ioctl() doesn't\nfind the ioctl number in vm_ioctl_caps[], and kvm_arch_vm_ioctl() calls\nit for every number the generic code doesn't handle, so\nioctl(vm_fd, 0xdeadbeef) from userspace taints a pKVM host and panics it\nunder panic_on_warn. The lookup is fed userspace input: return false,\nand userspace gets the -EINVAL kvm_arch_vm_ioctl() returns for that\nnumber on a host without pKVM.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/49d9d295d69d07e850cae35933ba8519e2915f26","tags":[]},{"url":"https://git.kernel.org/stable/c/cc53eb5c6515e3221314624a22c9da9c80a67f63","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}