Description
A vulnerability was found in HDF5 1.14.6 and classified as critical. This issue affects the function H5MM_strndup of the component Metadata Attribute Decoder. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The vendor plans to fix this issue in an upcoming release.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | HDF5 | 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 | No fix yet | — |
| 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 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | hdf5 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | hdf5 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | hdf5 | No fix yet | — |
| Ubuntu Pro 14.04 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 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | hdf5 | 1.14.6-1 | — |
| Azure Linux 2 (CBL-Mariner) | hdf5 | 1.14.6-1 | — |
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-299723 | HDF5 Metadata Attribute Decoder H5MM_strndup heap-based overflow vdb-entry technical-description
- VDB-299723 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #514533 | HDFGroup hdf5 v1.14.6 Buffer Overflow third-party-advisory
- https://github.com/madao123123/crash_report/blob/main/hdf5_poc/hdf5_poc4.md exploit