ffmpeg | branch: release/5.0 | Michael Niedermayer <mich...@niedermayer.cc> | 
Mon Apr 11 21:52:55 2022 +0200| [14d8814edca862895fbf64187c32f2ac61afde90] | 
committer: Michael Niedermayer

avformat/demux: Use unsigned to check duration vs duration_text

Fixes: signed integer overflow: 9223371898743775808 - -138111000000 cannot be 
represented in type 'long'
Fixes: 
46245/clusterfuzz-testcase-minimized-ffmpeg_dem_OGG_fuzzer-5075129786302464

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <one...@gmail.com>
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
(cherry picked from commit 6007d5688c8b0efe5bb8489cca3a0e32b2001263)
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=14d8814edca862895fbf64187c32f2ac61afde90
---

 libavformat/demux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/demux.c b/libavformat/demux.c
index f895f0ba85..0aba11e70b 100644
--- a/libavformat/demux.c
+++ b/libavformat/demux.c
@@ -1586,7 +1586,7 @@ static void update_stream_timings(AVFormatContext *ic)
     else if (end_time < end_time_text)
         av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream 
endtime %f\n", end_time_text / (float)AV_TIME_BASE);
 
-     if (duration == INT64_MIN || (duration < duration_text && duration_text - 
duration < AV_TIME_BASE))
+     if (duration == INT64_MIN || (duration < duration_text && 
(uint64_t)duration_text - duration < AV_TIME_BASE))
          duration = duration_text;
      else if (duration < duration_text)
          av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream 
duration %f\n", duration_text / (float)AV_TIME_BASE);

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