start_code = -1;
buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code);
+ if (start_code < SLICE_MIN_START_CODE || start_code > SLICE_MAX_START_CODE)
+ return AVERROR_INVALIDDATA;
mb_y = start_code - SLICE_MIN_START_CODE;
if (s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16)
mb_y += (*buf&0xE0)<<2;
mb_y <<= field_pic;
if (s->picture_structure == PICT_BOTTOM_FIELD)
mb_y++;
- if (mb_y < 0 || mb_y >= s->end_mb_y)
+ if (mb_y >= s->end_mb_y)
return AVERROR_INVALIDDATA;
}
}