Description
A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | HDF5 | 1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5, 1.14.6 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | hdf5 | 2.1.0+repack-1 | — |
| Debian 13 | hdf5 | No fix yet | — |
| Debian 12 | hdf5 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | hdf5 | No fix yet | — |
| Ubuntu 26.04 LTS | hdf5 | No fix yet | — |
| Ubuntu 25.10 | hdf5 | No fix yet | — |
| Ubuntu 24.04 LTS | hdf5 | No fix yet | — |
| Ubuntu 22.04 LTS | hdf5 | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | hdf5 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux Ai 3 | hdf5 +5 | 1.14.6-6.el9ai | RHSA-2025:23731 |
Advisories 2
- RHSA-2025:23731 Red Hat Security Advisory: RHEL AI 3.0 hdf5 security update Red Hat Security Advisories (RHSA) · Sep 23, 2026
- WID-SEC-2025-2907 Red Hat Enterprise Linux AI (HDF5 ): Mehrere Schwachstellen ermöglichen Manipulation von Dateien BSI CERT-Bund (WID) · Dec 21, 2025
References
- VDB-313636 | HDF5 H5Fint.c H5F_addr_decode_len heap-based overflow vdb-entry technical-description
- VDB-313636 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #592589 | HDF5 1.14.6 Heap-based Buffer Overflow third-party-advisory
- https://github.com/HDFGroup/hdf5/issues/5581 issue-tracking
- https://github.com/user-attachments/files/20626851/reproduce.tar.gz exploit