38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
From: Li Qiang <liqiang6-s@360.cn>
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Date: Tue, 1 Nov 2016 05:37:57 -0700
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Subject: [PATCH] virtio-gpu: fix information leak in capset get dispatch
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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In virgl_cmd_get_capset function, it uses g_malloc to allocate
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a response struct to the guest. As the 'resp'struct hasn't been full
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initialized it will lead the 'resp->padding' field to the guest.
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Use g_malloc0 to avoid this.
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Signed-off-by: Li Qiang <liqiang6-s@360.cn>
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Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-id: 58188cae.4a6ec20a.3d2d1.aff2@mx.google.com
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[ kraxel: resolved conflict ]
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit 85d9d044471f93c48c5c396f7e217b4ef12f69f8)
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---
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hw/display/virtio-gpu-3d.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
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index e29f099bd5..cdd03a47bd 100644
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--- a/hw/display/virtio-gpu-3d.c
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+++ b/hw/display/virtio-gpu-3d.c
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@@ -376,7 +376,7 @@ static void virgl_cmd_get_capset(VirtIOGPU *g,
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return;
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}
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- resp = g_malloc(sizeof(*resp) + max_size);
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+ resp = g_malloc0(sizeof(*resp) + max_size);
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resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
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virgl_renderer_fill_caps(gc.capset_id,
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gc.capset_version,
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