id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
4104,IReadBlock / IWriteBlock fail to seek,lucasvr,warmerdam,"The SAGA Raster module may fail to seek to certain file offsets depending on the input file size.

The computation of the offset performed in SAGARasterBand::{IReadBlock,IWriteBlock} on n_mBits, nRasterXSize, nRasterYSize and nBlockYOff results in a signed 32-bit temporary value. As a consequence, if the resulting offset is not within the 32-bit range, a truncated or potentially negative value could be provided to VSIFSeekL(), causing runtime errors such as:

    ERROR 3: Unable to seek to beginning of grid row.
    ERROR 1: IReadBlock failed at X offset 0, Y offset 6684
    ERROR 3: Unable to seek to beginning of grid row.
    ERROR 1: IReadBlock failed at X offset 0, Y offset 6685
    ERROR 3: Unable to seek to beginning of grid row.
    [...]
",defect,closed,normal,1.8.1,GDAL_Raster,unspecified,major,fixed,IReadBlock IWriteBlock seek,