Bug Fixes (BUG)
- Cope with deflated images with CMYK Black Only (2322)
- Handle indirect objects as parameters for CCITTFaxDecode (2307)
- check words length in _cmap type1_alternative function (2310)
Robustness (ROB)
- Relax flate decoding for too many lookup values (2331)
- Let _build_destination skip in case of missing /D key (2018)
[Full Changelog](https://github.com/py-pdf/pypdf/compare/3.17.1...3.17.2)