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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-04 15:24:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-23 13:15:17 +0200 |
| commit | 851c9c1cad27f030640a9e9b8651699c50a0a13d (patch) | |
| tree | 86616b76bd939916b0f5d7696313b47d57efcaba | |
| parent | 2fd6441fe4d58416075b4fbc572eb37bbcf6469b (diff) | |
| download | ffmpeg-851c9c1cad27f030640a9e9b8651699c50a0a13d.tar.gz | |
avcodec/msvideo1: Check buffer size before re-getting the frame
Fixes timeout
Fixes: 1306/clusterfuzz-testcase-minimized-6152296217968640
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit cabfed6895fcc679cd6a6244a12d800e0f3f2d20)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/msvideo1.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/msvideo1.c b/libavcodec/msvideo1.c index 80d183dad1..1a04af22a9 100644 --- a/libavcodec/msvideo1.c +++ b/libavcodec/msvideo1.c @@ -302,6 +302,12 @@ static int msvideo1_decode_frame(AVCodecContext *avctx, s->buf = buf; s->size = buf_size; + // Discard frame if its smaller than the minimum frame size + if (buf_size < (avctx->width/4) * (avctx->height/4) / 512) { + av_log(avctx, AV_LOG_ERROR, "Packet is too small\n"); + return AVERROR_INVALIDDATA; + } + if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) return ret; |