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This information applies to version(s): 1, 2, 3
DxO PureRAW fixes lens flaws such as optical distortion, chromatic aberration, lens sharpness, aliasing, vignetting for supported images. In terms of geometric correction, DxO PureRAW is only going to correct distortion.
The best software for geometric corrections are DxO ViewPoint or Perspective Efex from Nik Collection. Both can be run using DxO PhotoLab as host software and RAW-Converter, as standalone software, or as a plug-in from certified third-party software.