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avformat/mov: Check edit list for overflow

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Fixes: 67492/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5778297231310848
Fixes: signed integer overflow: 2314885530818453536 + 7782220156096217088 cannot be represented in type 'long'

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer 2024-03-25 03:13:50 +01:00
parent 09a62a6413
commit 2882d30e3a
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GPG Key ID: B18E8928B3948D64
1 changed files with 4 additions and 0 deletions
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libavformat/mov.c
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@ -3686,6 +3686,10 @@ static int get_edit_list_entry(MOVContext *mov,
}
*edit_list_duration = av_rescale(*edit_list_duration, msc->time_scale,
global_timescale);
if (*edit_list_duration + (uint64_t)*edit_list_media_time > INT64_MAX)
*edit_list_duration = 0;
return 1;
}