diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index 0683c17..54d7a69 100644
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -480,6 +480,9 @@
                 if (lineDelta.fX && lineDelta.fY) {
                     return false; // diagonal
                 }
+                if (!lineDelta.isFinite()) {
+                    return false; // path contains infinity or NaN
+                }
                 if (lineStart == lineEnd) {
                     break; // single point on side OK
                 }