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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-15 22:56:18 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 13:33:44 +0200 |
| commit | 759febd8804e17bd6ed2cfa1fc1f2117172693df (patch) | |
| tree | 2fdf0f83a47d0dff558d7dcf86b641f2e655e68b | |
| parent | 1bcbe5bc9bf030195cb2db287d00b0a4dfa6428b (diff) | |
| download | ffmpeg-759febd8804e17bd6ed2cfa1fc1f2117172693df.tar.gz | |
fftools/ffmpeg: Fix integer overflow in duration computation in seek_to_start()
Fixes: signed integer overflow: -9223372036854775808 - 9223372036854775807 cannot be represented in type 'long'
Fixes: Ticket8142
Found-by: Suhwan
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4f4ad33d96a01d82edf56d58599017cb0ae5bfa8)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | fftools/ffmpeg.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c index d436a0e71c..00c80fdcbe 100644 --- a/fftools/ffmpeg.c +++ b/fftools/ffmpeg.c @@ -4193,7 +4193,8 @@ static int seek_to_start(InputFile *ifile, AVFormatContext *is) ifile->time_base = ist->st->time_base; /* the total duration of the stream, max_pts - min_pts is * the duration of the stream without the last frame */ - duration += ist->max_pts - ist->min_pts; + if (ist->max_pts > ist->min_pts && ist->max_pts - (uint64_t)ist->min_pts < INT64_MAX - duration) + duration += ist->max_pts - ist->min_pts; ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base, ifile->time_base); } |