From: Debian Multimedia Maintainers <debian-multimedia@lists.debian.org>
Date: Mon, 19 Jun 2023 21:46:06 +0000 (+0100)
Subject: CVE-2021-45764
X-Git-Tag: archive/raspbian/1.0.1+dfsg1-4+rpi1+deb11u3^2~53
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=63c4b1cf5c8e4983a4202698ba395d9561c84a1b;p=gpac.git

CVE-2021-45764

Origin: https://github.com/gpac/gpac/commit/e54df17892bee983d09d9437e44e6a1528fb46cb
Reviewed-by: Aron Xu <aron@debian.org>

From e54df17892bee983d09d9437e44e6a1528fb46cb Mon Sep 17 00:00:00 2001
From: jeanlf <jeanlf@gpac.io>
Date: Mon, 13 Dec 2021 11:42:13 +0100
Subject: [PATCH] fixed #1971


Gbp-Pq: Name CVE-2021-45764.patch
---

diff --git a/src/isomedia/isom_store.c b/src/isomedia/isom_store.c
index e9144ed..254902b 100644
--- a/src/isomedia/isom_store.c
+++ b/src/isomedia/isom_store.c
@@ -253,6 +253,7 @@ static GF_Err ShiftOffset(GF_ISOFile *file, GF_List *writers, u64 offset)
 
 	i=0;
 	while ((writer = (TrackWriter *)gf_list_enum(writers, &i))) {
+                if (!writer->stsc || !writer->stco) return GF_ISOM_INVALID_FILE;
 		if (writer->mdia->mediaTrack->meta) ShiftMetaOffset(writer->mdia->mediaTrack->meta, offset);
 
 		//we have to proceed entry by entry in case a part of the media is not self-contained...