Use After Free Affecting hdf5 package, versions <1.14.1-2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-ECHOLATEST-HDF5-18067169
  • published21 Jul 2026
  • disclosed9 Apr 2026

Introduced: 9 Apr 2026

CVE-2026-34734  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Echo:latest hdf5 to version 1.14.1-2 or higher.

NVD Description

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

HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.

CVSS Base Scores

version 3.1