| CVE: CVE-2021-3544 |
| Upstream-Status: Backport |
| Signed-off-by: Ross Burton <ross.burton@arm.com> |
| |
| From b7afebcf9e6ecf3cf9b5a9b9b731ed04bca6aa3e Mon Sep 17 00:00:00 2001 |
| From: Li Qiang <liq3ea@163.com> |
| Date: Sat, 15 May 2021 20:03:59 -0700 |
| Subject: [PATCH 4/7] vhost-user-gpu: fix memory leak while calling |
| 'vg_resource_unref' (CVE-2021-3544) |
| MIME-Version: 1.0 |
| Content-Type: text/plain; charset=UTF-8 |
| Content-Transfer-Encoding: 8bit |
| |
| If the guest trigger following sequences, the attach_backing will be leaked: |
| |
| vg_resource_create_2d |
| vg_resource_attach_backing |
| vg_resource_unref |
| |
| This patch fix this by freeing 'res->iov' in vg_resource_destroy. |
| |
| Fixes: CVE-2021-3544 |
| Reported-by: Li Qiang <liq3ea@163.com> |
| virtio-gpu fix: 5e8e3c4c75 ("virtio-gpu: fix resource leak |
| in virgl_cmd_resource_unref") |
| |
| Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org> |
| Signed-off-by: Li Qiang <liq3ea@163.com> |
| Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> |
| Message-Id: <20210516030403.107723-5-liq3ea@163.com> |
| Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> |
| --- |
| contrib/vhost-user-gpu/vhost-user-gpu.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| diff --git a/contrib/vhost-user-gpu/vhost-user-gpu.c b/contrib/vhost-user-gpu/vhost-user-gpu.c |
| index 0437e52b64..770dfad529 100644 |
| --- a/contrib/vhost-user-gpu/vhost-user-gpu.c |
| +++ b/contrib/vhost-user-gpu/vhost-user-gpu.c |
| @@ -400,6 +400,7 @@ vg_resource_destroy(VuGpu *g, |
| } |
| |
| vugbm_buffer_destroy(&res->buffer); |
| + g_free(res->iov); |
| pixman_image_unref(res->image); |
| QTAILQ_REMOVE(&g->reslist, res, next); |
| g_free(res); |
| -- |
| 2.25.1 |
| |