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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-05-26 23:18:34 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-12 12:01:32 +0200 |
| commit | 914d6a7c1a7a1850b4053847a784b174c9146c55 (patch) | |
| tree | fd9515c4571cd6357939309afb96d1a655035bfd | |
| parent | 4896fa18add7636ea9986edde51493331f1fb01e (diff) | |
| download | ffmpeg-914d6a7c1a7a1850b4053847a784b174c9146c55.tar.gz | |
avcodec/interplayvideo: check decoding_map_size with video_data_size
Fixes: Timeout (90543 ms -> 59 ms)
Fixes: 14721/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_INTERPLAY_VIDEO_fuzzer-5697492148027392
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/interplayvideo.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/interplayvideo.c b/libavcodec/interplayvideo.c index deaa09cba6..4313fdf7ac 100644 --- a/libavcodec/interplayvideo.c +++ b/libavcodec/interplayvideo.c @@ -1260,7 +1260,7 @@ static int ipvideo_decode_frame(AVCodecContext *avctx, s->decoding_map_size = ((s->avctx->width / 8) * (s->avctx->height / 8)) * 2; s->decoding_map = buf + 8 + 14; /* 14 bits of op data */ video_data_size -= s->decoding_map_size + 14; - if (video_data_size <= 0) + if (video_data_size <= 0 || s->decoding_map_size == 0) return AVERROR_INVALIDDATA; if (buf_size < 8 + s->decoding_map_size + 14 + video_data_size) |