| Andrew Geissler | 0903674 | 2021-06-25 14:25:14 -0500 | [diff] [blame^] | 1 | CVE: CVE-2021-3545 |
| 2 | Upstream-Status: Backport |
| 3 | Signed-off-by: Ross Burton <ross.burton@arm.com> |
| 4 | |
| 5 | From 121841b25d72d13f8cad554363138c360f1250ea Mon Sep 17 00:00:00 2001 |
| 6 | From: Li Qiang <liq3ea@163.com> |
| 7 | Date: Sat, 15 May 2021 20:03:56 -0700 |
| 8 | Subject: [PATCH 1/7] vhost-user-gpu: fix memory disclosure in |
| 9 | virgl_cmd_get_capset_info (CVE-2021-3545) |
| 10 | MIME-Version: 1.0 |
| 11 | Content-Type: text/plain; charset=UTF-8 |
| 12 | Content-Transfer-Encoding: 8bit |
| 13 | |
| 14 | Otherwise some of the 'resp' will be leaked to guest. |
| 15 | |
| 16 | Fixes: CVE-2021-3545 |
| 17 | Reported-by: Li Qiang <liq3ea@163.com> |
| 18 | virtio-gpu fix: 42a8dadc74 ("virtio-gpu: fix information leak |
| 19 | in getting capset info dispatch") |
| 20 | |
| 21 | Signed-off-by: Li Qiang <liq3ea@163.com> |
| 22 | Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> |
| 23 | Message-Id: <20210516030403.107723-2-liq3ea@163.com> |
| 24 | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> |
| 25 | --- |
| 26 | contrib/vhost-user-gpu/virgl.c | 1 + |
| 27 | 1 file changed, 1 insertion(+) |
| 28 | |
| 29 | diff --git a/contrib/vhost-user-gpu/virgl.c b/contrib/vhost-user-gpu/virgl.c |
| 30 | index 9e6660c7ab..6a332d601f 100644 |
| 31 | --- a/contrib/vhost-user-gpu/virgl.c |
| 32 | +++ b/contrib/vhost-user-gpu/virgl.c |
| 33 | @@ -128,6 +128,7 @@ virgl_cmd_get_capset_info(VuGpu *g, |
| 34 | |
| 35 | VUGPU_FILL_CMD(info); |
| 36 | |
| 37 | + memset(&resp, 0, sizeof(resp)); |
| 38 | if (info.capset_index == 0) { |
| 39 | resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL; |
| 40 | virgl_renderer_get_cap_set(resp.capset_id, |
| 41 | -- |
| 42 | 2.25.1 |
| 43 | |