diff --git a/testing/web-platform/tests/css/css-flexbox/negative-available-size-crash.html b/testing/web-platform/tests/css/css-flexbox/negative-available-size-crash.html
new file mode 100644
index 000000000000..837fdaeba9ef
--- /dev/null
+++ b/testing/web-platform/tests/css/css-flexbox/negative-available-size-crash.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1274476">
+<div style="display: flex;">
+  <div style="display: flex; height: 0; overflow-x: scroll;">a
