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avformat/mov: Don't add attached pic if one is already present

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Fixes: memleak
Fixes: 67714/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5671570999476224

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2024-04-02 04:13:44 +02:00
parent f492f1ac23
commit 9d219ff149
1 changed files with 1 additions and 1 deletions
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2
libavformat/mov.c
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@@ -8820,7 +8820,7 @@ static void mov_read_chapters(AVFormatContext *s)
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
st->disposition |= AV_DISPOSITION_ATTACHED_PIC | AV_DISPOSITION_TIMED_THUMBNAILS;
if (sti->nb_index_entries) {
if (!st->attached_pic.data && sti->nb_index_entries) {
// Retrieve the first frame, if possible
AVIndexEntry *sample = &sti->index_entries[0];
if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {