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CVE-2026-17573

Double Free in H5D__chunk_copy() in HDF5 via a Crafted Chunk-Index Size Field

Published: 7/27/2026 Last updated: 7/27/2026 Reserved: 7/27/2026

A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free.

CNA assigner: HDFG (0253b833-3e77-4dfe-9d57-17db1a2f0a74) Requested by: n/a

Metrics

Version Score Severity Vector String
4.0 4 Medium CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

Opam packages affected (1)

hdf5

Products affected (0)

No product listed.

References (2)