Processing for READ_VQ_CONF needs to check whether the requested queue
value is actually in the supported range and post a channel program
check if not.
Cc: qemu-sta...@nongnu.org
Reviewed-by: David Hildenbrand <d...@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.h...@de.ibm.com>
---
hw/s390x/virtio-ccw.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index ceb6a45..d32ecaf 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -549,6 +549,10 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
ret = -EFAULT;
} else {
vq_config.index = lduw_be_phys(&address_space_memory, ccw.cda);
+ if (vq_config.index >= VIRTIO_PCI_QUEUE_MAX) {
+ ret = -EINVAL;
+ break;
+ }
vq_config.num_max = virtio_queue_get_num(vdev,
vq_config.index);
stw_be_phys(&address_space_memory,
--
2.3.4
