| CVE: CVE-2021-3544 |
| Upstream-Status: Backport |
| Signed-off-by: Ross Burton <ross.burton@arm.com> |
| |
| From 63736af5a6571d9def93769431e0d7e38c6677bf Mon Sep 17 00:00:00 2001 |
| From: Li Qiang <liq3ea@163.com> |
| Date: Sat, 15 May 2021 20:04:01 -0700 |
| Subject: [PATCH 6/7] vhost-user-gpu: fix memory leak in |
| 'virgl_resource_attach_backing' (CVE-2021-3544) |
| MIME-Version: 1.0 |
| Content-Type: text/plain; charset=UTF-8 |
| Content-Transfer-Encoding: 8bit |
| |
| If 'virgl_renderer_resource_attach_iov' failed, the 'res_iovs' will |
| be leaked. |
| |
| Fixes: CVE-2021-3544 |
| Reported-by: Li Qiang <liq3ea@163.com> |
| virtio-gpu fix: 33243031da ("virtio-gpu-3d: fix memory leak |
| in resource attach backing") |
| |
| Signed-off-by: Li Qiang <liq3ea@163.com> |
| Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> |
| Message-Id: <20210516030403.107723-7-liq3ea@163.com> |
| Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> |
| --- |
| contrib/vhost-user-gpu/virgl.c | 5 ++++- |
| 1 file changed, 4 insertions(+), 1 deletion(-) |
| |
| diff --git a/contrib/vhost-user-gpu/virgl.c b/contrib/vhost-user-gpu/virgl.c |
| index c669d73a1d..a16a311d80 100644 |
| --- a/contrib/vhost-user-gpu/virgl.c |
| +++ b/contrib/vhost-user-gpu/virgl.c |
| @@ -287,8 +287,11 @@ virgl_resource_attach_backing(VuGpu *g, |
| return; |
| } |
| |
| - virgl_renderer_resource_attach_iov(att_rb.resource_id, |
| + ret = virgl_renderer_resource_attach_iov(att_rb.resource_id, |
| res_iovs, att_rb.nr_entries); |
| + if (ret != 0) { |
| + g_free(res_iovs); |
| + } |
| } |
| |
| static void |
| -- |
| 2.25.1 |
| |