H5O__layout_decode in H5Olayout.c in HDF5 through 2.3.0 does not validate that a chunked dataset's stored chunk-layout dimensionality matches its dataspace rank when an existing dataset is opened, whereas this check is performed only at dataset-creation time. This allows attackers to cause a denial of service (divide-by-zero and application crash in H5S__hyper_iter_get_seq_list in src/H5Shyper.c) via a crafted HDF5 file with mismatched chunk/dataspace ranks that is opened and read via H5Dopen2 and H5Dread, e.g. by the h5repack tool.
| Version | Type | Source | Base | Exp | Imp |
|---|---|---|---|---|---|
| 4.0 | Primary | cve.org | 6.8 | — | — |
| 4.0 | Secondary | NVD | 6.8 | — | — |
| 4.0 | Secondary | ENISA EUVD | 6.8 | — | — |