Hdf5: Heap-buffer-overflow in H5L__extern_traverse
A heap-buffer-overflow vulnerability exists in the H5L__extern_traverse function of the hdf5 library. This issue was identified by OSS-Fuzz and results in a read overflow on the heap. Multiple specific versions of hdf5 are affected, including 1.14.1 and several 2.x pre-release and release versions. No CVSS score or vendor patch information is currently available.
AI Analysis
Technical Summary
The hdf5 library contains a heap-buffer-overflow vulnerability triggered in the H5L__extern_traverse function, as reported by OSS-Fuzz (OSV-2023-133). The crash involves reading beyond allocated heap memory, which can lead to undefined behavior or potential memory corruption. The affected versions explicitly 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 information about exploitation in the wild or an official patch at this time.
Potential Impact
The vulnerability causes a heap-buffer-overflow read, which may lead to application crashes or memory corruption. No confirmed exploits are known, and the impact beyond memory safety issues is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider avoiding the affected versions or applying any recommended workarounds from the vendor or OSS-Fuzz. Monitor official hdf5 channels for updates.
Hdf5: Heap-buffer-overflow in H5L__extern_traverse
Description
A heap-buffer-overflow vulnerability exists in the H5L__extern_traverse function of the hdf5 library. This issue was identified by OSS-Fuzz and results in a read overflow on the heap. Multiple specific versions of hdf5 are affected, including 1.14.1 and several 2.x pre-release and release versions. No CVSS score or vendor patch 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 hdf5 library contains a heap-buffer-overflow vulnerability triggered in the H5L__extern_traverse function, as reported by OSS-Fuzz (OSV-2023-133). The crash involves reading beyond allocated heap memory, which can lead to undefined behavior or potential memory corruption. The affected versions explicitly 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 information about exploitation in the wild or an official patch at this time.
Potential Impact
The vulnerability causes a heap-buffer-overflow read, which may lead to application crashes or memory corruption. No confirmed exploits are known, and the impact beyond memory safety issues is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider avoiding the affected versions or applying any recommended workarounds from the vendor or OSS-Fuzz. Monitor official hdf5 channels for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-133
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae55f9c2644c7f89b09ea
Added to database: 07/30/2026, 05:47:11 UTC
Last enriched: 07/30/2026, 07:30:50 UTC
Last updated: 09/07/2026, 17:16:37 UTC
Views: 33
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