From c886dd2f5875e01a5949fddd0388c965c7766cfb Mon Sep 17 00:00:00 2001
From: Zhang Rui <bbcallen@gmail.com>
Date: Thu, 21 May 2015 11:48:55 +0800
Subject: [PATCH] avformat/mov: check result of avio_seek
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavformat/mov.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libavformat/mov.c b/libavformat/mov.c
index ed2afd42155..f6f07be554d 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -4240,7 +4240,10 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
mov->found_mdat = 0;
if (!mov->next_root_atom)
return AVERROR_EOF;
- avio_seek(s->pb, mov->next_root_atom, SEEK_SET);
+ if (avio_seek(s->pb, mov->next_root_atom, SEEK_SET) != mov->next_root_atom) {
+ av_log(mov->fc, AV_LOG_ERROR, "next root atom offset 0x%"PRIx64": partial file\n", mov->next_root_atom);
+ return AVERROR_INVALIDDATA;
+ }
mov->next_root_atom = 0;
if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
avio_feof(s->pb))
--
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