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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-15 18:43:25 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-22 15:06:55 +0200 |
| commit | ee53bb2399d8f387ac93a18ba0600ca7b04ac634 (patch) | |
| tree | 8fb56d636a7d693c788e475195b1dc0b1404edd6 | |
| parent | 718e03e5f297564b828730dfc012fa3f6fbf576b (diff) | |
| download | ffmpeg-ee53bb2399d8f387ac93a18ba0600ca7b04ac634.tar.gz | |
avformat/mov: check for pts overflow in mov_read_sidx()
Fixes: signed integer overflow: 9223372036846336888 + 4278255871 cannot be represented in type 'long'
Fixes: 32782/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6059216516284416
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mov.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index 9ca1ac89a8..bf29060973 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -5111,7 +5111,9 @@ static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom) if (frag_stream_info) frag_stream_info->sidx_pts = timestamp; - if (av_sat_add64(offset, size) != offset + size) + if (av_sat_add64(offset, size) != offset + size || + av_sat_add64(pts, duration) != pts + (uint64_t)duration + ) return AVERROR_INVALIDDATA; offset += size; pts += duration; |