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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-31 22:18:23 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-05 23:16:54 +0200 |
| commit | 653de8249dab1a6c96bc4d5a049b3b9234c9a4ba (patch) | |
| tree | 7ebe4fff8bbe5460cbb90135ab74fe78185b4134 | |
| parent | 041ad6d2bb44eb4a673e5de61c7e7b0766170714 (diff) | |
| download | ffmpeg-653de8249dab1a6c96bc4d5a049b3b9234c9a4ba.tar.gz | |
avcodec/cinepak: Check input packet size before frame reallocation
Reduces time spend decoding 1917/clusterfuzz-testcase-minimized-5023221273329664
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e47057e932ff9a071d52fa1d5d4a956340eb2475)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/cinepak.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/cinepak.c b/libavcodec/cinepak.c index 58c26dc69c..7a7466204a 100644 --- a/libavcodec/cinepak.c +++ b/libavcodec/cinepak.c @@ -322,9 +322,6 @@ static int cinepak_decode (CinepakContext *s) int y0 = 0; int encoded_buf_size; - if (s->size < 10) - return AVERROR_INVALIDDATA; - frame_flags = s->data[0]; num_strips = AV_RB16 (&s->data[8]); encoded_buf_size = AV_RB24(&s->data[1]); @@ -439,6 +436,9 @@ static int cinepak_decode_frame(AVCodecContext *avctx, s->data = buf; s->size = buf_size; + if (s->size < 10) + return AVERROR_INVALIDDATA; + if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) return ret; |