1 files changed, 46 insertions, 0 deletions

diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3544_4.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3544_4.patch
new file mode 100644
index 0000000000..96e36eb854
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3544_4.patch
@@ -0,0 +1,46 @@
+vhost-user-gpu: fix memory leak in 'virgl_cmd_resource_unref' (CVE-2021-3544)
+
+The 'res->iov' will be leaked if the guest trigger following sequences:
+
+virgl_cmd_create_resource_2d
+virgl_resource_attach_backing
+virgl_cmd_resource_unref
+
+This patch fixes this.
+
+Fixes: CVE-2021-3544
+Reported-by: default avatarLi Qiang <liq3ea@163.com>
+virtio-gpu fix: 5e8e3c4c
+
+("virtio-gpu: fix resource leak
+in virgl_cmd_resource_unref"
+Signed-off-by: default avatarLi Qiang <liq3ea@163.com>
+Reviewed-by: Marc-André Lureau's avatarMarc-André Lureau <marcandre.lureau@redhat.com>
+Message-Id: <20210516030403.107723-6-liq3ea@163.com>
+Signed-off-by: Gerd Hoffmann's avatarGerd Hoffmann <kraxel@redhat.com>
+
+Upstream-Status: Backport
+CVE: CVE-2021-3544
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+Index: qemu-4.2.0/contrib/vhost-user-gpu/virgl.c
+===================================================================
+--- qemu-4.2.0.orig/contrib/vhost-user-gpu/virgl.c
++++ qemu-4.2.0/contrib/vhost-user-gpu/virgl.c
+@@ -105,9 +105,16 @@ virgl_cmd_resource_unref(VuGpu *g,
+                          struct virtio_gpu_ctrl_command *cmd)
+ {
+     struct virtio_gpu_resource_unref unref;
++    struct iovec *res_iovs = NULL;
++    int num_iovs = 0;
+ 
+     VUGPU_FILL_CMD(unref);
+ 
++    virgl_renderer_resource_detach_iov(unref.resource_id,
++            &res_iovs,
++            &num_iovs);
++    g_free(res_iovs);
++
+     virgl_renderer_resource_unref(unref.resource_id);
+ }
+