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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-05 22:22:30 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-09 23:33:18 +0100 |
| commit | 87d54a62396830eff232051ac38b5c273ca2e38a (patch) | |
| tree | 7ce08bc77c857732c6dc8b2e33ccf6ee783cdfbe /libavformat/tty.c | |
| parent | c9c958051cc91604b9427229d648e65e782476d4 (diff) | |
| download | ffmpeg-87d54a62396830eff232051ac38b5c273ca2e38a.tar.gz | |
avformat/tty: Fix division by 0 in probe
Fixes: division by zero
Fixes: 20436/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5763229752229888
Fixes: 20503/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4841641154445312
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/tty.c')
| -rw-r--r-- | libavformat/tty.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/tty.c b/libavformat/tty.c index 60f7e9f87e..854a23c500 100644 --- a/libavformat/tty.c +++ b/libavformat/tty.c @@ -53,6 +53,9 @@ static int read_probe(const AVProbeData *p) { int cnt = 0; + if (!p->buf_size) + return 0; + for (int i = 0; i < p->buf_size; i++) cnt += !!isansicode(p->buf[i]); |