CVE-2026-98470
KVM: arm64: Don't WARN on an unknown VM ioctl in protected mode
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
b12b3b04f6ba072ca5a618a75e546c996be94bd1 < cc53eb5c6515e3221314624a22c9da9c80a67f63 b12b3b04f6ba072ca5a618a75e546c996be94bd1 < 49d9d295d69d07e850cae35933ba8519e2915f26
Linux / Linux
7.0