From 511cac8cbc60fafdae2589d674b7aeab15388eef Mon Sep 17 00:00:00 2001 From: Li Qiang Date: Tue, 15 Jun 2021 10:11:17 +0800 Subject: [PATCH] vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info (CVE-2021-3545) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix CVE-2021-3544 Otherwise some of the 'resp' will be leaked to guest. Fixes: CVE-2021-3545 Reported-by: default avatarLi Qiang virtio-gpu fix: 42a8dadc ("virtio-gpu: fix information leak in getting capset info dispatch") Signed-off-by: default avatarLi Qiang Reviewed-by: Marc-André Lureau's avatarMarc-André Lureau Message-Id: <20210516030403.107723-2-liq3ea@163.com> Signed-off-by: Gerd Hoffmann's avatarGerd Hoffmann Signed-off-by: Jiajie Li --- contrib/vhost-user-gpu/virgl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/contrib/vhost-user-gpu/virgl.c b/contrib/vhost-user-gpu/virgl.c index 79556df094..44e79ab82a 100644 --- a/contrib/vhost-user-gpu/virgl.c +++ b/contrib/vhost-user-gpu/virgl.c @@ -131,6 +131,7 @@ virgl_cmd_get_capset_info(VuGpu *g, VUGPU_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, -- 2.27.0