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OpenAdvisories
Medium · 5.2 CVE-2026-17574 EUVD-2026-49320GHSA-cv7r-692h-j9fh

NULL Pointer Dereference in HDF5 via Invalid Variable-Length Datatype Type Tag

Published Jul 27, 2026 · Updated Jul 27, 2026 · Assigned by HDFG

Description

HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file containing an attribute with an invalid variable-length datatype type field may cause the application to crash when the attribute is read.

Affected products

VendorProductAffectedFixed
The HDF Group HDF5 <= 2.1.1 —

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.

ReleasePackageFixed inAdvisory
Debian 14 hdf5 2.2.0+repack-1 —
Debian 13 hdf5 No fix yet —
Debian 12 hdf5 No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 hdf5 No fix yet —
Ubuntu 26.04 LTS 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)
ReleasePackageFixed inAdvisory
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 —

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 hdf5 1.14.6-4 —

References