CVE-2026-19024
HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message
- State
- Published
- Severity
- 8.2 High
- Published
- Aug 5, 2026
- Updated
- Aug 6, 2026
- Reserved
- Aug 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.2 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H | HDFG |
Weaknesses
- CWE-476 NULL pointer dereference
Affected Products
| Product | Versions |
|---|---|
HDF5The HDF Group |
|
References
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