diff --git a/src/effects/SkDashPathEffect.cpp b/src/effects/SkDashPathEffect.cpp
index cced73f..4cb98b3 100644
--- a/src/effects/SkDashPathEffect.cpp
+++ b/src/effects/SkDashPathEffect.cpp
@@ -367,6 +367,12 @@
 sk_sp<SkFlattenable> SkDashImpl::CreateProc(SkReadBuffer& buffer) {
     const SkScalar phase = buffer.readScalar();
     uint32_t count = buffer.getArrayCount();
+
+    // Don't allocate gigantic buffers if there's not data for them.
+    if (count > buffer.size() / sizeof(SkScalar)) {
+        return nullptr;
+    }
+
     SkAutoSTArray<32, SkScalar> intervals(count);
     if (buffer.readScalarArray(intervals.get(), count)) {
         return SkDashPathEffect::Make(intervals.get(), SkToInt(count), phase);