@@ -399,6 +399,7 @@ static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){

     if (!f->bitstream_buffer)

         return AVERROR(ENOMEM);

     f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)(buf + extra), bitstream_size/4);

+    memset((uint8_t*)f->bitstream_buffer + bitstream_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);

     init_get_bits(&f->gb, f->bitstream_buffer, 8*bitstream_size);

     f->wordstream= (const uint16_t*)(buf + extra + bitstream_size);

@@ -680,6 +681,7 @@ static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length){

     if (!f->bitstream_buffer)

         return AVERROR(ENOMEM);

     f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)prestream, prestream_size/4);

+    memset((uint8_t*)f->bitstream_buffer + prestream_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);

     init_get_bits(&f->pre_gb, f->bitstream_buffer, 8*prestream_size);

     f->last_dc= 0*128*8*8;