{"id":"AZL-94490","summary":"CVE-2026-19025 affecting package hdf5 1.14.6-4","details":"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.","modified":"2026-08-30T05:26:50Z","published":"2026-08-05T23:16:53Z","upstream":["CVE-2026-19025"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19025"}],"affected":[{"package":{"name":"hdf5","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/hdf5"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.14.6-4"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-94490.json"}}],"schema_version":"1.9.0"}