From: jeanlf <jeanlf@gpac.io>
Date: Wed, 1 Sep 2021 11:45:04 +0000 (+0200)
Subject: [PATCH] fixed #1904
X-Git-Tag: archive/raspbian/1.0.1+dfsg1-4+rpi1+deb11u3^2~75
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=4652823299dc11f0a02ed818278895c1584fa2ad;p=gpac.git

[PATCH] fixed #1904


Gbp-Pq: Name CVE-2021-40576_40606_40609.patch
---

diff --git a/src/isomedia/hint_track.c b/src/isomedia/hint_track.c
index 73fbe3a..38674b0 100644
--- a/src/isomedia/hint_track.c
+++ b/src/isomedia/hint_track.c
@@ -43,6 +43,9 @@ Bool IsHintTrack(GF_TrackBox *trak)
 u32 GetHintFormat(GF_TrackBox *trak)
 {
 	GF_HintMediaHeaderBox *hmhd = (GF_HintMediaHeaderBox *)trak->Media->information->InfoHeader;
+        if (!hmhd || (hmhd->type != GF_ISOM_BOX_TYPE_HMHD))
+                return 0;
+
 	if (!hmhd || !hmhd->subType) {
 		GF_Box *a = (GF_Box *)gf_list_get(trak->Media->information->sampleTable->SampleDescription->child_boxes, 0);
 		if (!hmhd) return a ? a->type : 0;