From a6f0609a6e40db3f8b741b19aacff354f9d4647b Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Mon, 20 Nov 2023 17:33:49 +0100
Subject: [PATCH] Throw a `JpegError` when a JPEG image has no frame data
 (issue 17302)

Given that there's nothing to parse in this case, since we're dealing with an invalid JPEG image, throwing an *explicit* Error makes sense here.
---
 src/core/jpg.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/core/jpg.js b/src/core/jpg.js
index de3673879252f..08a992afd3752 100644
--- a/src/core/jpg.js
+++ b/src/core/jpg.js
@@ -1073,6 +1073,9 @@ class JpegImage {
       offset += 2;
     }
 
+    if (!frame) {
+      throw new JpegError("JpegImage.parse - no frame data found.");
+    }
     this.width = frame.samplesPerLine;
     this.height = frame.scanLines;
     this.jfif = jfif;