Untrusted pointer dereference in the render_bin_output function in the h5dump tool in HDF5 before 2.1.1 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes subsequent elements to be read from a misaligned offset and dereferenced as a pointer.
Metrics
Affected Vendors & Products
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References
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| https://github.com/HDFGroup/hdf5/issues/6486 |
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History
Wed, 05 Aug 2026 22:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Untrusted pointer dereference in the render_bin_output function in the h5dump tool in HDF5 before 2.1.1 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes subsequent elements to be read from a misaligned offset and dereferenced as a pointer. | |
| Title | HDF5 h5dump Untrusted Pointer Dereference in Binary Output of Variable-Length String Datasets | |
| Weaknesses | CWE-822 | |
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cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: HDFG
Published:
Updated: 2026-08-05T22:13:45.859Z
Reserved: 2026-08-05T22:12:46.385Z
Link: CVE-2026-19023
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
Updated: 2026-08-05T23:30:04Z