debian/patches/extra/CVE-2016-9908-virtio-gpu-fix-information-leak-in-capset-get-dispat.patch

   1 From bde803ceb42d6bddc06a1881c00acdf203214772 Mon Sep 17 00:00:00 2001
   2 From: Li Qiang <liqiang6-s@360.cn>
   3 Date: Tue, 1 Nov 2016 05:37:57 -0700
   4 Subject: [PATCH 10/12] virtio-gpu: fix information leak in capset get dispatch
   5
   6 In virgl_cmd_get_capset function, it uses g_malloc to allocate
   7 a response struct to the guest. As the 'resp'struct hasn't been full
   8 initialized it will lead the 'resp->padding' field to the guest.
   9 Use g_malloc0 to avoid this.
  10
  11 Signed-off-by: Li Qiang <liqiang6-s@360.cn>
  12 ---
  13  hw/display/virtio-gpu-3d.c | 2 +-
  14  1 file changed, 1 insertion(+), 1 deletion(-)
  15
  16 diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
  17 index 23f39de..d98b140 100644
  18 --- a/hw/display/virtio-gpu-3d.c
  19 +++ b/hw/display/virtio-gpu-3d.c
  20 @@ -371,7 +371,7 @@ static void virgl_cmd_get_capset(VirtIOGPU *g,
  21
  22      virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
  23                                 &max_size);
  24 -    resp = g_malloc(sizeof(*resp) + max_size);
  25 +    resp = g_malloc0(sizeof(*resp) + max_size);
  26
  27      resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
  28      virgl_renderer_fill_caps(gc.capset_id,
  29 --
  30 2.1.4
  31