File CVE-2024-47602.patch of Package gstreamer-plugins-good.39306

From 8aa1c185cf47042a0cc624ae3ff5b0545455fedf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 30 Sep 2024 18:25:53 +0300
Subject: [PATCH 3/7] matroskademux: Check for big enough WavPack codec private
 data before accessing it

Thanks to Antonio Morales for finding and reporting the issue.

Fixes GHSL-2024-250
Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3866

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8057>
---
diff -urp gst-plugins-good-1.24.7.orig/gst/matroska/matroska-demux.c gst-plugins-good-1.24.7/gst/matroska/matroska-demux.c
--- gst-plugins-good-1.24.7.orig/gst/matroska/matroska-demux.c	2024-12-16 03:52:55.398900959 -0500
+++ gst-plugins-good-1.24.7/gst/matroska/matroska-demux.c	2024-12-16 03:55:10.289956126 -0500
@@ -3894,6 +3894,11 @@ gst_matroska_demux_add_wvpk_header (GstE
   guint8 *buf_data, *data;
   Wavpack4Header wvh;
 
+  if (!stream->codec_priv || stream->codec_priv_size < 2) {
+    GST_ERROR_OBJECT (element, "No or too small wavpack codec private data");
+    return GST_FLOW_ERROR;
+  }
+
   wvh.ck_id[0] = 'w';
   wvh.ck_id[1] = 'v';
   wvh.ck_id[2] = 'p';