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avcodec/interplayvideo: Move parameter change check up

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Fixes out of array read
Fixes: 544/clusterfuzz-testcase-5936536407244800.f8bd9b24_8ba77916_70c2c7be_3df6a2ea_96cd9f14

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-02-04 02:45:02 +01:00
parent 831274fba4
commit b1e2192007
1 changed files with 5 additions and 4 deletions
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9
libavcodec/interplayvideo.c
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@ -989,6 +989,11 @@ static int ipvideo_decode_frame(AVCodecContext *avctx,
AVFrame *frame = data;
int ret;
if (av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, NULL)) {
av_frame_unref(s->last_frame);
av_frame_unref(s->second_last_frame);
}
if (buf_size < 2)
return AVERROR_INVALIDDATA;
@ -1000,10 +1005,6 @@ static int ipvideo_decode_frame(AVCodecContext *avctx,
if (buf_size < s->decoding_map_size + 2)
return buf_size;
if (av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, NULL)) {
av_frame_unref(s->last_frame);
av_frame_unref(s->second_last_frame);
}
s->decoding_map = buf + 2;
bytestream2_init(&s->stream_ptr, buf + 2 + s->decoding_map_size,