VULNERABILITY INTELLIGENCE
CVE-2026-19025
EPSS probability0.17%
CISA KEVNot currently listed
Published2026-08-05
Last modified2026-10-23
Description
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.
Weakness classification
- 0253b833-3e77-4dfe-9d57-17db1a2f0a74: CWE-369