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| author | Paul B Mahol <onemda@gmail.com> | 2017-06-27 15:46:08 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2017-06-27 15:46:08 +0200 |
| commit | feab761b73c37311a23a6cbbcee1ddf56439d5a4 (patch) | |
| tree | 4e54a45e9a628a7fb111cf6c0d46cec0fb224597 /libavcodec/interplayvideo.c | |
| parent | c4cbaec6e3af24eb9f32c0864838b56339b7997f (diff) | |
| download | ffmpeg-feab761b73c37311a23a6cbbcee1ddf56439d5a4.tar.gz | |
avcodec/interplayvideo: properly check if there is enough bytes left
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'libavcodec/interplayvideo.c')
| -rw-r--r-- | libavcodec/interplayvideo.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libavcodec/interplayvideo.c b/libavcodec/interplayvideo.c index 421de26cb1..2ac2f991a6 100644 --- a/libavcodec/interplayvideo.c +++ b/libavcodec/interplayvideo.c @@ -1233,6 +1233,10 @@ 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 (buf_size < 8 + s->decoding_map_size + 14 + video_data_size) + return AVERROR_INVALIDDATA; + bytestream2_init(&s->stream_ptr, buf + 8 + s->decoding_map_size + 14, video_data_size); break; @@ -1253,6 +1257,9 @@ static int ipvideo_decode_frame(AVCodecContext *avctx, return AVERROR_INVALIDDATA; } + if (buf_size < 8 + video_data_size + s->decoding_map_size + s->skip_map_size) + return AVERROR_INVALIDDATA; + bytestream2_init(&s->stream_ptr, buf + 8, video_data_size); s->decoding_map = buf + 8 + video_data_size; s->skip_map = buf + 8 + video_data_size + s->decoding_map_size; @@ -1270,6 +1277,9 @@ static int ipvideo_decode_frame(AVCodecContext *avctx, return AVERROR_INVALIDDATA; } + if (buf_size < 8 + video_data_size + s->decoding_map_size) + return AVERROR_INVALIDDATA; + bytestream2_init(&s->stream_ptr, buf + 8, video_data_size); s->decoding_map = buf + 8 + video_data_size; |