CVE-2026-19026
6.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
H5Z__filter_nbit in H5Znbit.c in HDF5 through 2.3.0 dereferences cd_values[0] through cd_values[4] without validating that cd_values is non-NULL or that cd_nelmts is at least 5, the fixed size of the filter's header. This allows attackers to cause a denial of service via a crafted HDF5 file that stores the N-Bit filter pipeline message with zero client-data values, opened and read via H5Dread, e.g. by the h5ls or h5repack tools.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| The HDF Group | HDF5 | <=2.3.0 | affected |
Weaknesses
- CWE-476: CWE-476 NULL pointer dereference
- CWE-1284: CWE-1284 Improper validation of specified quantity in input
References
- https://github.com/HDFGroup/hdf5/pull/6497
- https://github.com/HDFGroup/hdf5/issues/6489
- https://github.com/HDFGroup/hdf5/issues/6492
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