NULL Pointer Dereference Affecting hdf5 package, versions <0:2.2.0-0.1.3.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-RHEL10-HDF5-19645151
  • published9 Sept 2026
  • disclosed5 Aug 2026

Introduced: 5 Aug 2026

CVE-2026-19024  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:10 hdf5 to version 0:2.2.0-0.1.3.hum1 or higher.
This issue was patched in RHSA-2026:79131.

NVD Description

Note: Versions mentioned in the description apply only to the upstream hdf5 package and not the hdf5 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

NULL pointer dereference in H5Pget_fill_value in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.

CVSS Base Scores

version 3.1