Hdf5: Heap-buffer-overflow in H5G__node_cmp3
A heap-buffer-overflow vulnerability exists in the H5G__node_cmp3 function of the hdf5 library, as reported by OSS-Fuzz. The issue causes a read overflow on the heap, potentially leading to memory corruption or crashes. Multiple specific versions of hdf5 are affected. No CVSS score or known exploits in the wild have been reported.
AI Analysis
Technical Summary
The hdf5 library contains a heap-buffer-overflow vulnerability in the function H5G__node_cmp3, identified through OSS-Fuzz testing. The crash involves a heap-buffer-overflow read of 5 bytes during operations involving H5G__node_cmp3, H5B_find, and H5G__stab_lookup. 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 vendor advisory indicating patch availability or remediation status.
Potential Impact
The vulnerability can cause heap-buffer-overflow reads, which may lead to memory corruption or application crashes when processing data using the affected hdf5 versions. No known exploits in the wild have been reported, and the exact impact beyond potential crashes is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or official fix is available, users should consider avoiding use of the affected versions or apply any available updates from the vendor. Monitor official hdf5 project channels for updates.
Hdf5: Heap-buffer-overflow in H5G__node_cmp3
Description
A heap-buffer-overflow vulnerability exists in the H5G__node_cmp3 function of the hdf5 library, as reported by OSS-Fuzz. The issue causes a read overflow on the heap, potentially leading to memory corruption or crashes. Multiple specific versions of hdf5 are affected. No CVSS score or known exploits in the wild have been reported.
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 hdf5 library contains a heap-buffer-overflow vulnerability in the function H5G__node_cmp3, identified through OSS-Fuzz testing. The crash involves a heap-buffer-overflow read of 5 bytes during operations involving H5G__node_cmp3, H5B_find, and H5G__stab_lookup. 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 vendor advisory indicating patch availability or remediation status.
Potential Impact
The vulnerability can cause heap-buffer-overflow reads, which may lead to memory corruption or application crashes when processing data using the affected hdf5 versions. No known exploits in the wild have been reported, and the exact impact beyond potential crashes is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or official fix is available, users should consider avoiding use of the affected versions or apply any available updates from the vendor. Monitor official hdf5 project channels for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-216
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae55f9c2644c7f89b09f7
Added to database: 07/30/2026, 05:47:11 UTC
Last enriched: 07/30/2026, 07:31:09 UTC
Last updated: 09/08/2026, 21:11:52 UTC
Views: 46
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