shorten: fix "off by padding" bug
Fixes array overread Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -437,7 +437,7 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data,
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buf_size = FFMIN(buf_size, s->max_framesize - s->bitstream_size);
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input_buf_size = buf_size;
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if (s->bitstream_index + s->bitstream_size + buf_size >
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if (s->bitstream_index + s->bitstream_size + buf_size + FF_INPUT_BUFFER_PADDING_SIZE >
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s->allocated_bitstream_size) {
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memmove(s->bitstream, &s->bitstream[s->bitstream_index],
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s->bitstream_size);
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