haraldwolff/qemu-patch-raspberry4
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virtio-gpu: check if the resource already exists in virtio_gpu_load()

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While loading virtio-gpu, the data can be malicious, we
should check if the resource already exists.

Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190628161358.10400-1-liq3ea@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Li Qiang 2019-06-28 09:13:58 -07:00 committed by Gerd Hoffmann
parent a7f85e03b9
commit b0ee78ff31
1 changed files with 5 additions and 0 deletions
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5
hw/display/virtio-gpu.c
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@ -1002,6 +1002,11 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
resource_id = qemu_get_be32(f);
while (resource_id != 0) {
res = virtio_gpu_find_resource(g, resource_id);
if (res) {
return -EINVAL;
}
res = g_new0(struct virtio_gpu_simple_resource, 1);
res->resource_id = resource_id;
res->width = qemu_get_be32(f);