Bug 2507561 (CVE-2026-17572)

Summary: CVE-2026-17572 hdf5: HDF5: Denial of Service via crafted file requiring user interaction
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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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A flaw was found in HDF5, a data management library. This vulnerability, a heap-based buffer overflow, allows a local attacker to cause a denial of service (DoS) by persuading a user to open a specially crafted HDF5 file. The malformed file can trigger out-of-bounds memory operations, leading to application crashes or instability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2519669, 2519670    
Bug Blocks:    

Description OSIDB Bzimport 2026-07-27 16:02:27 UTC
Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a num_messages count exceeding list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.