CVE-2026-98470

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Don't WARN on an unknown VM ioctl in protected mode kvm_pkvm_ioctl_allowed() WARNs when kvm_get_cap_for_kvm_ioctl() doesn't find the ioctl number in vm_ioctl_caps[], and kvm_arch_vm_ioctl() calls it for every number the generic code doesn't handle, so ioctl(vm_fd, 0xdeadbeef) from userspace taints a pKVM host and panics it under panic_on_warn. The lookup is fed userspace input: return false, and userspace gets the -EINVAL kvm_arch_vm_ioctl() returns for that number on a host without pKVM.

• git.kernel.orghttps://git.kernel.org/stable/c/49d9d295d69d07e850cae35933ba8519e2915f26
• git.kernel.orghttps://git.kernel.org/stable/c/cc53eb5c6515e3221314624a22c9da9c80a67f63

No related CVEs by CWE or product.