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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-02 13:01:53 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-02 17:51:35 +0100 |
| commit | 4419433d77278cb742944c4514be5f72a04103c0 (patch) | |
| tree | bfe0a4252ff8ab28b8ff4256bb0bf351dd4147c2 | |
| parent | add3571a5938c591da115dcc41291188b0651b09 (diff) | |
| download | ffmpeg-4419433d77278cb742944c4514be5f72a04103c0.tar.gz | |
avformat/mov: Disallow empty sidx
It appears this is not allowed "Each Segment Index box documents how a (sub)segment is divided into one or more subsegments
(which may themselves be further subdivided using Segment Index boxes)."
Fixes: Null pointer dereference
Fixes: Ticket9517
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mov.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index 5e26267810..68b6d7f075 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -5118,6 +5118,8 @@ static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom) avio_rb16(pb); // reserved item_count = avio_rb16(pb); + if (item_count == 0) + return AVERROR_INVALIDDATA; for (i = 0; i < item_count; i++) { int index; |