File 0117-virtio-gpu-fix-information-leak-in-.patch of Package qemu-linux-user.7436

Overview Repositories Revisions Requests Users Attributes Meta

File 0117-virtio-gpu-fix-information-leak-in-.patch of Package qemu-linux-user.7436

From 4ffac2bc6adc51f4d34fbbdd22d0c6e6e0737785 Mon Sep 17 00:00:00 2001
From: Li Qiang <liqiang6-s@360.cn>
Date: Tue, 1 Nov 2016 02:53:11 -0700
Subject: [PATCH] virtio-gpu: fix information leak in getting capset info
 dispatch
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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 fa192946a3..5878809630 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,

Places

File 0117-virtio-gpu-fix-information-leak-in-.patch of Package qemu-linux-user.7436

Places