line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
if (s->is_tile) {
- if (line_offset > buf_size - 20)
+ if (buf_size < 20 || line_offset > buf_size - 20)
return AVERROR_INVALIDDATA;
src = buf + line_offset + 20;
tile_level_y = AV_RL32(src - 8);
data_size = AV_RL32(src - 4);
- if (data_size <= 0 || data_size > buf_size)
+ if (data_size <= 0 || data_size > buf_size - line_offset - 20)
return AVERROR_INVALIDDATA;
if (tile_level_x || tile_level_y) { /* tile level, is not the full res level */
td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
} else {
- if (line_offset > buf_size - 8)
+ if (buf_size < 8 || line_offset > buf_size - 8)
return AVERROR_INVALIDDATA;
src = buf + line_offset + 8;
return AVERROR_INVALIDDATA;
data_size = AV_RL32(src - 4);
- if (data_size <= 0 || data_size > buf_size)
+ if (data_size <= 0 || data_size > buf_size - line_offset - 8)
return AVERROR_INVALIDDATA;
td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */