RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

avformat/utils: Check rfps_duration_sum for overflow 

Fixes: signed integer overflow: 9151595917793558550 + 297519050751678697 cannot be represented in type 'long'
Fixes: 15496/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5722866475073536

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-07-04 23:01:19 +02:00
parent 6ebbfb377f
commit 5c46fdf305
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavformat/utils.c
View File

@ -3348,8 +3348,10 @@ int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
}
}
}
st->info->duration_count++;
st->info->rfps_duration_sum += duration;
if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
st->info->duration_count++;
st->info->rfps_duration_sum += duration;
}
if (st->info->duration_count % 10 == 0) {
int n = st->info->duration_count;