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.
Metrics
Affected Vendors & Products
References
History
Fri, 07 Aug 2026 09:30:00 +0000
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Hdfgroup
Hdfgroup hdf5 |
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| Vendors & Products |
Hdfgroup
Hdfgroup hdf5 |
Thu, 06 Aug 2026 15:30:00 +0000
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| Metrics |
ssvc
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Wed, 05 Aug 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | 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. | |
| Title | Nbit filter NULL/short parameter-array dereference | |
| Weaknesses | CWE-1284 CWE-476 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: HDFG
Published:
Updated: 2026-08-06T14:31:59.795Z
Reserved: 2026-08-05T22:14:40.349Z
Link: CVE-2026-19026
Updated: 2026-08-06T14:31:52.551Z
No data.
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OpenCVE Enrichment
Updated: 2026-08-07T09:15:07Z