CVE-2026-98637

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure

pkvm vcpu init sve() clears KVM ARM VCPU SVE in kvm->arch.vcpu features when it fails, but vcpu has sve() tests KVM ARCH FLAG GUEST HAS SVE, which is left set. Later vCPUs on that VM then skip the SVE setup and register with a NULL sve state, which the guest's first FP access hands to sve load state().

Return the error without touching vcpu features.