virglrenderer: fix multiple CVEs

fix these CVE:
CVE-2019-18390
CVE-2019-18391
CVE-2020-8002

(From OE-Core rev: 74a1ec4a39fe3b05045c1d60a89393cd25eccb1f)

Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/meta/recipes-graphics/virglrenderer/virglrenderer/CVE-2020-8002.patch b/meta/recipes-graphics/virglrenderer/virglrenderer/CVE-2020-8002.patch
new file mode 100644
index 0000000000..925f2c8eb0
--- /dev/null
+++ b/meta/recipes-graphics/virglrenderer/virglrenderer/CVE-2020-8002.patch
@@ -0,0 +1,39 @@
+From 63bcca251f093d83da7e290ab4bbd38ae69089b5 Mon Sep 17 00:00:00 2001
+From: Gert Wollny <gert.wollny@collabora.com>
+Date: Wed, 15 Jan 2020 13:43:58 +0100
+Subject: [PATCH] vrend: Don't try launching a grid if no CS is available
+
+Closes #155
+
+Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
+Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
+
+Upstream-Status: Backport 
+[https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/63bcca251f093d83da7e290ab4bbd38ae69089b5.patch]
+CVE: CVE-2020-8002
+Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
+---
+ src/vrend_renderer.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c
+index a054bad8..2280fc43 100644
+--- a/src/vrend_renderer.c
++++ b/src/vrend_renderer.c
+@@ -4604,6 +4604,13 @@ void vrend_launch_grid(struct vrend_context *ctx,
+       }
+       ctx->sub->shader_dirty = true;
+    }
++
++   if (!ctx->sub->prog) {
++      vrend_printf("%s: Skipping compute shader execution due to missing shaders: %s\n",
++                   __func__, ctx->debug_name);
++      return;
++   }
++
+    vrend_use_program(ctx, ctx->sub->prog->id);
+ 
+    vrend_draw_bind_ubo_shader(ctx, PIPE_SHADER_COMPUTE, 0);
+-- 
+2.24.1
+