Hdf5: Negative-size-param in H5MM_memcpy
A vulnerability in the hdf5 library involving a negative-size parameter in the H5MM_memcpy function was reported by OSS-Fuzz. The issue causes a crash related to memory copying operations during object link decoding and message iteration. Multiple specific versions of hdf5 are affected, including 1.14.1 and several 2.x pre-release and release versions. No patch or official fix information is currently available.
AI Analysis
Technical Summary
The vulnerability reported in hdf5 involves a negative-size parameter passed to the H5MM_memcpy function, leading to a crash. This was identified through OSS-Fuzz testing and manifests during the decoding of object links and iteration over messages within the library. The affected versions include =1.14.1, =2.0.0, =2.1.0-pre1test, =2.1.0, =2.1.1, =2.2.0-rc1, and =2.2.0. There is no CVSS score or detailed impact analysis provided, and no patch or remediation guidance is currently documented.
Potential Impact
The vulnerability causes a crash in the hdf5 library when processing certain data structures, potentially leading to denial of service in applications relying on these affected versions. There is no evidence of known exploits in the wild or further impact such as code execution disclosed in the available data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider avoiding the affected versions or applying any vendor recommendations once published.
Hdf5: Negative-size-param in H5MM_memcpy
Description
A vulnerability in the hdf5 library involving a negative-size parameter in the H5MM_memcpy function was reported by OSS-Fuzz. The issue causes a crash related to memory copying operations during object link decoding and message iteration. Multiple specific versions of hdf5 are affected, including 1.14.1 and several 2.x pre-release and release versions. No patch or official fix information is currently available.
Affected software
pkg:generic/hdf5Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability reported in hdf5 involves a negative-size parameter passed to the H5MM_memcpy function, leading to a crash. This was identified through OSS-Fuzz testing and manifests during the decoding of object links and iteration over messages within the library. The affected versions include =1.14.1, =2.0.0, =2.1.0-pre1test, =2.1.0, =2.1.1, =2.2.0-rc1, and =2.2.0. There is no CVSS score or detailed impact analysis provided, and no patch or remediation guidance is currently documented.
Potential Impact
The vulnerability causes a crash in the hdf5 library when processing certain data structures, potentially leading to denial of service in applications relying on these affected versions. There is no evidence of known exploits in the wild or further impact such as code execution disclosed in the available data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider avoiding the affected versions or applying any vendor recommendations once published.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-392
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae55a9c2644c7f89ad267
Added to database: 07/30/2026, 05:47:06 UTC
Last enriched: 07/30/2026, 07:28:21 UTC
Last updated: 09/07/2026, 17:13:23 UTC
Views: 27
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