diff --git a/wp-includes/media.php b/wp-includes/media.php
index 6b0187a932..7b99f95980 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -985,7 +985,7 @@ function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attac
 	 */
 	$image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id );
 
-	if ( empty( $image_meta['sizes'] ) ) {
+	if ( empty( $image_meta['sizes'] ) || strlen( $image_meta['file'] ) < 4 ) {
 		return false;
 	}
 
@@ -1060,6 +1060,11 @@ function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attac
 	 */
 	foreach ( $image_sizes as $image ) {
 
+		// Check if image meta isn't corrupted.
+		if ( ! is_array( $image ) ) {
+			continue;
+		}
+
 		// If the file name is part of the `src`, we've confirmed a match.
 		if ( ! $src_matched && false !== strpos( $image_src, $dirname . $image['file'] ) ) {
 			$src_matched = true;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 073d2b39ff..037c1d46a4 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta3-37001';
+$wp_version = '4.5-beta3-37002';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.