From 2ec02f6c64f043a249850c835ca7975c3a155d8b Mon Sep 17 00:00:00 2001 From: Ricardo Koller Date: Mon, 4 Oct 2021 18:19:14 -0700 Subject: [PATCH] KVM: arm64: vgic-v3: Check ITS region is not above the VM IPA size Verify that the ITS region does not extend beyond the VM-specified IPA range (phys_size). base + size > phys_size AND base < phys_size Add the missing check into vgic_its_set_attr() which is called when setting the region. Reviewed-by: Eric Auger Signed-off-by: Ricardo Koller Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211005011921.437353-5-ricarkol@google.com --- arch/arm64/kvm/vgic/vgic-its.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c index 61728c543eb9c..ad55bb8cd30f5 100644 --- a/arch/arm64/kvm/vgic/vgic-its.c +++ b/arch/arm64/kvm/vgic/vgic-its.c @@ -2710,8 +2710,8 @@ static int vgic_its_set_attr(struct kvm_device *dev, if (copy_from_user(&addr, uaddr, sizeof(addr))) return -EFAULT; - ret = vgic_check_ioaddr(dev->kvm, &its->vgic_its_base, - addr, SZ_64K); + ret = vgic_check_iorange(dev->kvm, its->vgic_its_base, + addr, SZ_64K, KVM_VGIC_V3_ITS_SIZE); if (ret) return ret; -- 2.30.2