diff --git a/tools_webrtc/ubsan/blacklist.txt b/tools_webrtc/ubsan/blacklist.txt
index 3f4c80ec1b..cecdebdfe3 100644
--- a/tools_webrtc/ubsan/blacklist.txt
+++ b/tools_webrtc/ubsan/blacklist.txt
@@ -14,6 +14,12 @@ src:*/third_party/yasm/*
 src:*/third_party/ffmpeg/libavcodec/*
 src:*/third_party/openh264/*
 
+# TODO(bugs.webrtc.org/11110).
+# Remove those once upstream code has been cleaned.
+src:*/third_party/abseil-cpp/absl/debugging/*
+src:*/third_party/libvpx/source/libvpx/vp8/*
+src:*/third_party/opus/src/*
+
 #############################################################################
 # Ignore system libraries.
 src:*/usr/*