From c72025cabdfcb2fe30d24eda7bb9d1d01a1b6555 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Fri, 4 Oct 2024 13:21:44 +0300
Subject: [PATCH 4/7] wavparse: Check that at least 4 bytes are available
 before parsing cue chunks

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8042>

CVE: CVE-2024-47775
CVE: CVE-2024-47776
CVE: CVE-2024-47777
CVE: CVE-2024-47778
Upstream-Status: Backport [https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/c72025cabdfcb2fe30d24eda7bb9d1d01a1b6555]
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 gst/wavparse/gstwavparse.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gst/wavparse/gstwavparse.c b/gst/wavparse/gstwavparse.c
index 6a0c44638e..5655ee3825 100644
--- a/gst/wavparse/gstwavparse.c
+++ b/gst/wavparse/gstwavparse.c
@@ -789,6 +789,11 @@ gst_wavparse_cue_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
     return TRUE;
   }
 
+  if (size < 4) {
+    GST_WARNING_OBJECT (wav, "broken file %d", size);
+    return FALSE;
+  }
+
   ncues = GST_READ_UINT32_LE (data);
 
   if (size < 4 + ncues * 24) {
-- 
2.30.2