File 0117-virtio-gpu-fix-information-leak-in-.patch of Package qemu.20756

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File 0117-virtio-gpu-fix-information-leak-in-.patch of Package qemu.20756

From: Li Qiang <liqiang6-s@360.cn>
Date: Tue, 1 Nov 2016 02:53:11 -0700
Subject: virtio-gpu: fix information leak in getting capset info dispatch
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In virgl_cmd_get_capset_info dispatch function, the 'resp' hasn't
been full initialized before writing to the guest. This will leak
the 'resp.padding' and 'resp.hdr.padding' fieds to the guest. This
patch fix this issue.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 5818661e.0860240a.77264.7a56@mx.google.com
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 42a8dadc74f8982fc269e54e3c5627b54d9f83d8)
[BR: CVE-2016-9845 BSC#1013767]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/display/virtio-gpu-3d.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
index fa192946a35d87e2818d4e6fea4a..5878809630b58cc91b52346cbec9 100644
--- a/hw/display/virtio-gpu-3d.c
+++ b/hw/display/virtio-gpu-3d.c
@@ -345,6 +345,7 @@ static void virgl_cmd_get_capset_info(VirtIOGPU *g,
 
     VIRTIO_GPU_FILL_CMD(info);
 
+    memset(&resp, 0, sizeof(resp));
     if (info.capset_index == 0) {
         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
         virgl_renderer_get_cap_set(resp.capset_id,

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File 0117-virtio-gpu-fix-information-leak-in-.patch of Package qemu.20756

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