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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-08-26 13:37:27 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-08-29 21:34:38 +0200 |
| commit | 4de4bc06fdfd0383f3d9012c6557a38408a09d28 (patch) | |
| tree | 283a14935de0cb2ffb4dcfc6138334fd10fc848c | |
| parent | 06ce821bc7622c1394c5179fb69cabf02dd24869 (diff) | |
| download | ffmpeg-4de4bc06fdfd0383f3d9012c6557a38408a09d28.tar.gz | |
avformat/mov: Check dts for overflow in mov_read_trun()
Fixes: signed integer overflow: 9223372034248226491 + 3275247799 cannot be represented in type 'long'
Fixes: clusterfuzz-testcase-minimized-audio_decoder_fuzzer-4538729166077952
Reported-by: Matt Wolenetz <wolenetz@google.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 da4c5d60f8..c5583e07c7 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -4953,6 +4953,8 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom) "size %u, distance %d, keyframe %d\n", st->index, index_entry_pos, offset, dts, sample_size, distance, keyframe); distance++; + if (av_sat_add64(dts, sample_duration) != dts + (uint64_t)sample_duration) + return AVERROR_INVALIDDATA; dts += sample_duration; offset += sample_size; sc->data_size += sample_size; |