Bug 2507553 (CVE-2026-17573)

Summary: CVE-2026-17573 hdf5: HDF5 library: Denial of Service via crafted HDF5 file processing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: alinfoot, bbrownin, dtrifiro, rbryant, weaton
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the HDF5 library. A local user could exploit a double free vulnerability by processing a specially crafted HDF5 file with an oversized chunk size field using the h5repack tool. This could cause the application to unexpectedly terminate, leading to a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2519671, 2519672    
Bug Blocks:    

Description OSIDB Bzimport 2026-07-27 16:01:59 UTC
A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free.