Description
A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk holds that many bytes. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message.
Published: 2026-10-06
Score: 6.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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References
History

Tue, 06 Oct 2026 21:15:00 +0000

Type Values Removed Values Added
Description A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets a remote attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk is that large. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message. A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk holds that many bytes. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message.

Tue, 06 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Description A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets a remote attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk is that large. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message.
Title HDF5 scale-offset filter heap buffer over-read via crafted chunk
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 6.8, 'vector': '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'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: HDFG

Published:

Updated: 2026-10-06T20:56:27.850Z

Reserved: 2026-08-05T22:14:42.476Z

Link: CVE-2026-19029

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-06T21:17:20.410

Modified: 2026-10-06T21:17:20.410

Link: CVE-2026-19029

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses