diff --git a/lib/rules_block/list.js b/lib/rules_block/list.js
index 2d6874e..49b9a5b 100644
--- a/lib/rules_block/list.js
+++ b/lib/rules_block/list.js
@@ -31,7 +31,8 @@ function skipBulletListMarker(state, startLine) {
 // or -1 on fail.
 function skipOrderedListMarker(state, startLine) {
   var ch,
-      pos = state.bMarks[startLine] + state.tShift[startLine],
+      start = state.bMarks[startLine] + state.tShift[startLine],
+      pos = start,
       max = state.eMarks[startLine];
 
   // List marker should have at least 2 chars (digit + dot)
@@ -48,6 +49,11 @@ function skipOrderedListMarker(state, startLine) {
     ch = state.src.charCodeAt(pos++);
 
     if (ch >= 0x30/* 0 */ && ch <= 0x39/* 9 */) {
+
+      // List marker should have no more than 9 digits
+      // (prevents integer overflow in browsers)
+      if (pos - start >= 10) { return -1; }
+
       continue;
     }
 
diff --git a/test/fixtures/markdown-it/commonmark_extras.txt b/test/fixtures/markdown-it/commonmark_extras.txt
index b951dfe..fe302ae 100644
--- a/test/fixtures/markdown-it/commonmark_extras.txt
+++ b/test/fixtures/markdown-it/commonmark_extras.txt
@@ -108,19 +108,6 @@ test
 </code></pre>
 .
 
-List starting with zero:
-.
-0. foo
-1. bar
-2. baz
-.
-<ol start="0">
-<li>foo</li>
-<li>bar</li>
-<li>baz</li>
-</ol>
-.
-
 
 Coverage. Directive can terminate paragraph.
 .