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avformat/utils: Check dts in update_initial_timestamps() more

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Fixes: signed integer overflow: -9223372036853488158 - 90000000 cannot be represented in type 'long long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_MPSUB_fuzzer-6696625298866176

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 29851cb840)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-01-16 22:05:53 +01:00
parent 32ad867b24
commit 428ff6d209
1 changed files with 1 additions and 0 deletions
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libavformat/utils.c
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@ -1142,6 +1142,7 @@ static void update_initial_timestamps(AVFormatContext *s, int stream_index,
dts == AV_NOPTS_VALUE ||
st->cur_dts == AV_NOPTS_VALUE ||
st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
dts < INT_MIN + (st->cur_dts - RELATIVE_TS_BASE) ||
is_relative(dts))
return;