add backport-0002-CVE-2021-41133.patch.

backport-0002-CVE-2021-41133.patch

@@ -0,0 +1,32 @@
+From 89ae9fe74c6d445bb1b3a40e568d77cf5de47e48 Mon Sep 17 00:00:00 2001
+From: Simon McVittie <smcv@collabora.com>
+Date: Wed, 1 Sep 2021 12:44:04 +0100
+Subject: [PATCH] run: Add cross-references for some other seccomp syscall
+ filters
+
+Signed-off-by: Simon McVittie <smcv@collabora.com>
+
+Conflict:NA
+Reference:https://github.com/flatpak/flatpak/commit/89ae9fe74c6d445bb1b3a40e568d77cf5de47e48
+
+---
+ common/flatpak-run.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/common/flatpak-run.c b/common/flatpak-run.c
+index 3931820..38ba16f 100644
+--- a/common/flatpak-run.c
++++ b/common/flatpak-run.c
+@@ -2779,6 +2779,10 @@ setup_seccomp (FlatpakBwrap   *bwrap,
+    *  https://git.gnome.org/browse/linux-user-chroot
+    *    in src/setup-seccomp.c
+    *
++   * Other useful resources:
++   * https://github.com/systemd/systemd/blob/HEAD/src/shared/seccomp-util.c
++   * https://github.com/moby/moby/blob/HEAD/profiles/seccomp/default.json
++   *
+    **** END NOTE ON CODE SHARING
+    */
+   struct
+-- 
+2.27.0