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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-24 17:03:08 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:53:29 +0200 |
| commit | cf8fa41490698922020a54152c6889fc0b2a8c0d (patch) | |
| tree | ed4c64130dcabd4d589ed854e047d24b53e15a38 | |
| parent | 930f1fcccd502a74fecb4650781dcd788ba6b4c6 (diff) | |
| download | ffmpeg-cf8fa41490698922020a54152c6889fc0b2a8c0d.tar.gz | |
avformat/mov: Ignore multiple STSC / STCO
Fixes: STSC / STCO inconsistency and assertion failure
Fixes: crbug1184666.mp4
Found-by: Chromium ASAN fuzzer
Reviewed-by: Matt Wolenetz <wolenetz@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 2611d20d353026f996cb9aaced8b35db37f490d4)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mov.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index 370fbc8e78..63fb813654 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -2000,8 +2000,10 @@ static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom) if (!entries) return 0; - if (sc->chunk_offsets) - av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n"); + if (sc->chunk_offsets) { + av_log(c->fc, AV_LOG_WARNING, "Ignoring duplicated STCO atom\n"); + return 0; + } av_free(sc->chunk_offsets); sc->chunk_count = 0; sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets)); @@ -2647,8 +2649,10 @@ static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom) if (!entries) return 0; - if (sc->stsc_data) - av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n"); + if (sc->stsc_data) { + av_log(c->fc, AV_LOG_WARNING, "Ignoring duplicated STSC atom\n"); + return 0; + } av_free(sc->stsc_data); sc->stsc_count = 0; sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data)); |