Hdf5: Heap-buffer-overflow in H5O__mtime_new_encode
A heap-buffer-overflow vulnerability exists in the H5O__mtime_new_encode function of the hdf5 library, as reported by OSS-Fuzz. This vulnerability causes a write overflow on the heap, potentially leading to memory corruption. Multiple specific versions of hdf5 are affected. No CVSS score or vendor patch information is currently available.
AI Analysis
Technical Summary
The hdf5 library contains a heap-buffer-overflow vulnerability in the H5O__mtime_new_encode function. This issue was identified through OSS-Fuzz and involves a heap write overflow, which occurs during the encoding of modification time metadata objects. The crash stack includes H5O__mtime_new_encode, H5O_msg_flush, and H5O__chunk_serialize functions. 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 known exploit in the wild and no patch or official remediation information is provided.
Potential Impact
The heap-buffer-overflow vulnerability can lead to memory corruption, which may cause application crashes or potentially enable arbitrary code execution depending on the context of use. However, no known exploits have been reported in the wild to date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should monitor vendor communications and consider applying any updates once released. No specific mitigations are provided by the vendor or OSS-Fuzz at this time.
Hdf5: Heap-buffer-overflow in H5O__mtime_new_encode
Description
A heap-buffer-overflow vulnerability exists in the H5O__mtime_new_encode function of the hdf5 library, as reported by OSS-Fuzz. This vulnerability causes a write overflow on the heap, potentially leading to memory corruption. Multiple specific versions of hdf5 are affected. 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 in the H5O__mtime_new_encode function. This issue was identified through OSS-Fuzz and involves a heap write overflow, which occurs during the encoding of modification time metadata objects. The crash stack includes H5O__mtime_new_encode, H5O_msg_flush, and H5O__chunk_serialize functions. 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 known exploit in the wild and no patch or official remediation information is provided.
Potential Impact
The heap-buffer-overflow vulnerability can lead to memory corruption, which may cause application crashes or potentially enable arbitrary code execution depending on the context of use. However, no known exploits have been reported in the wild to date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should monitor vendor communications and consider applying any updates once released. No specific mitigations are provided by the vendor or OSS-Fuzz at this time.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-89
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae54f9c2644c7f8988cd7
Added to database: 07/30/2026, 05:46:55 UTC
Last enriched: 07/30/2026, 07:23:20 UTC
Last updated: 09/07/2026, 17:12:33 UTC
Views: 37
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