Hdf5: Heap-buffer-overflow in H5FS__sect_link
A heap-buffer-overflow vulnerability exists in the H5FS__sect_link function of the hdf5 library, as reported by OSS-Fuzz. This vulnerability involves an out-of-bounds read of 8 bytes on the heap. Multiple specific versions of hdf5 are affected, including 1.14.1, 2.0.0, 2.1.0-pre1test, 2.1.0, 2.1.1, 2.2.0-rc1, and 2.2.0. No CVSS score or vendor patch information is provided, and no known exploits in the wild have been reported.
AI Analysis
Technical Summary
The hdf5 library contains a heap-buffer-overflow vulnerability in the H5FS__sect_link function, identified through OSS-Fuzz testing. The issue causes an 8-byte read beyond the allocated heap buffer, potentially leading to memory corruption or crashes. The vulnerability affects multiple specific versions of hdf5 as listed. No official patch or remediation details are currently available, and no exploitation in the wild has been documented.
Potential Impact
The heap-buffer-overflow vulnerability can cause memory corruption, which may lead to application crashes or undefined behavior when processing specially crafted inputs. Although no known exploits have been reported, such vulnerabilities can potentially be leveraged for denial of service or other memory corruption-based attacks depending on the context of use.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider avoiding use of the affected versions or apply any available OSS-Fuzz or community patches if available. Monitor official hdf5 project communications for updates.
Hdf5: Heap-buffer-overflow in H5FS__sect_link
Description
A heap-buffer-overflow vulnerability exists in the H5FS__sect_link function of the hdf5 library, as reported by OSS-Fuzz. This vulnerability involves an out-of-bounds read of 8 bytes on the heap. Multiple specific versions of hdf5 are affected, including 1.14.1, 2.0.0, 2.1.0-pre1test, 2.1.0, 2.1.1, 2.2.0-rc1, and 2.2.0. No CVSS score or vendor patch information is provided, and no 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 H5FS__sect_link function, identified through OSS-Fuzz testing. The issue causes an 8-byte read beyond the allocated heap buffer, potentially leading to memory corruption or crashes. The vulnerability affects multiple specific versions of hdf5 as listed. No official patch or remediation details are currently available, and no exploitation in the wild has been documented.
Potential Impact
The heap-buffer-overflow vulnerability can cause memory corruption, which may lead to application crashes or undefined behavior when processing specially crafted inputs. Although no known exploits have been reported, such vulnerabilities can potentially be leveraged for denial of service or other memory corruption-based attacks depending on the context of use.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider avoiding use of the affected versions or apply any available OSS-Fuzz or community patches if available. Monitor official hdf5 project communications for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-370
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae54b9c2644c7f89887c3
Added to database: 07/30/2026, 05:46:51 UTC
Last enriched: 07/30/2026, 07:19:45 UTC
Last updated: 09/07/2026, 17:32:14 UTC
Views: 14
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