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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-19024

HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

The HDF Group HDF5

Default version status: unaffected

  • <= 2.3.0affected

References