Hdf5: UNKNOWN READ in H5FL__blk_gc_list
A vulnerability in the hdf5 library causes an UNKNOWN READ crash in the function H5FL__blk_gc_list, as reported by OSS-Fuzz. The crash occurs during garbage collection routines in the library. This issue affects specific versions of hdf5 including 2.0.0 through 2.2.0. No patch or official fix information is provided in the available data. There are no known exploits in the wild for this vulnerability.
AI Analysis
Technical Summary
The hdf5 library has a vulnerability identified by OSS-Fuzz that triggers an UNKNOWN READ crash in the H5FL__blk_gc_list function, related to garbage collection processes (H5FL_garbage_coll and H5FL_term_package). The affected versions are explicitly listed as 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 detailed impact analysis is available, and no patch or remediation guidance is provided in the source data.
Potential Impact
The vulnerability causes an UNKNOWN READ crash in the hdf5 library's garbage collection functions, which may lead to application instability or denial of service when processing data with affected versions. There is no information about code execution or data corruption impacts. No known exploits have been reported.
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 vendor-provided workarounds once published.
Hdf5: UNKNOWN READ in H5FL__blk_gc_list
Description
A vulnerability in the hdf5 library causes an UNKNOWN READ crash in the function H5FL__blk_gc_list, as reported by OSS-Fuzz. The crash occurs during garbage collection routines in the library. This issue affects specific versions of hdf5 including 2.0.0 through 2.2.0. No patch or official fix information is provided in the available data. There are no known exploits in the wild for this vulnerability.
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 has a vulnerability identified by OSS-Fuzz that triggers an UNKNOWN READ crash in the H5FL__blk_gc_list function, related to garbage collection processes (H5FL_garbage_coll and H5FL_term_package). The affected versions are explicitly listed as 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 detailed impact analysis is available, and no patch or remediation guidance is provided in the source data.
Potential Impact
The vulnerability causes an UNKNOWN READ crash in the hdf5 library's garbage collection functions, which may lead to application instability or denial of service when processing data with affected versions. There is no information about code execution or data corruption impacts. No known exploits have been reported.
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 vendor-provided workarounds once published.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-381
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae55e9c2644c7f89b07ed
Added to database: 07/30/2026, 05:47:10 UTC
Last enriched: 07/30/2026, 07:29:36 UTC
Last updated: 09/07/2026, 17:23:43 UTC
Views: 28
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