KVM: arm/arm64: check IRQ number on userland injection

[deliverable/linux.git] / virt / kvm / arm / vgic.c

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 7ed78735f611601981b301a123a54bc8606f3e63..78fb8201014f74f2172baf8a48acc5173a450f4d 100644 (file)
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1561,6 +1561,9 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
                        goto out;
        }
 
+       if (irq_num >= kvm->arch.vgic.nr_irqs)
+               return -EINVAL;
+
        vcpu_id = vgic_update_irq_pending(kvm, cpuid, irq_num, level);
        if (vcpu_id >= 0) {
                /* kick the specified vcpu */