{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34734.json" } ], "title": "hdf5: h5dump: HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file", "tracking": { "current_release_date": "2026-06-30T03:52:45+00:00", "generator": { "date": "2026-06-30T03:52:45+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.3.0" } }, "id": "CVE-2026-34734", "initial_release_date": "2026-04-09T19:01:21.794000+00:00", "revision_history": [ { "date": "2026-04-09T19:01:21.794000+00:00", "number": "1", "summary": "Initial version" }, { "date": "2026-04-09T23:52:39.776958+00:00", "number": "2", "summary": "Current version" }, { "date": "2026-06-30T03:52:45+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux AI (RHEL AI) 3", "product": { "name": "Red Hat Enterprise Linux AI (RHEL AI) 3", "product_id": "red_hat_enterprise_linux_ai_(rhel_ai)_3", "product_identification_helper": { "cpe": "cpe:/a:redhat:enterprise_linux_ai:3" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux AI (RHEL AI) 3" }, { "category": "product_version", "name": "hdf5.src", "product": { "name": "hdf5.src", "product_id": "hdf5.src", "product_identification_helper": { "purl": "pkg:rpm/redhat/hdf5?arch=src" } } } ], "category": "vendor", "name": "Red Hat" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "hdf5.src as a component of Red Hat Enterprise Linux AI (RHEL AI) 3", "product_id": "red_hat_enterprise_linux_ai_(rhel_ai)_3:hdf5.src" }, "product_reference": "hdf5.src", "relates_to_product_reference": "red_hat_enterprise_linux_ai_(rhel_ai)_3" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-34734", "cwe": { "id": "CWE-825", "name": "Expired Pointer Dereference" }, "discovery_date": "2026-04-09T20:01:51.970618+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2457034" } ], "notes": [ { "category": "description", "text": "A flaw was found in the HDF5 software, specifically in the h5dump helper utility. An attacker can exploit this vulnerability by providing a specially crafted HDF5 file, leading to a heap-use-after-free condition. This flaw can result in arbitrary code execution, allowing the attacker to take control of the affected system, or cause a denial of service.", "title": "Vulnerability description" }, { "category": "summary", "text": "hdf5: h5dump: HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "known_affected": [ "red_hat_enterprise_linux_ai_(rhel_ai)_3:hdf5.src" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-34734" }, { "category": "external", "summary": "RHBZ#2457034", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457034" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-34734", "url": "https://www.cve.org/CVERecord?id=CVE-2026-34734" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-34734", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34734" }, { "category": "external", "summary": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj", "url": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj" } ], "release_date": "2026-04-09T19:01:21.794000+00:00", "remediations": [ { "category": "workaround", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "product_ids": [ "red_hat_enterprise_linux_ai_(rhel_ai)_3:hdf5.src" ] }, { "category": "none_available", "details": "Affected", "product_ids": [ "red_hat_enterprise_linux_ai_(rhel_ai)_3:hdf5.src" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "red_hat_enterprise_linux_ai_(rhel_ai)_3:hdf5.src" ] } ], "threats": [ { "category": "impact", "details": "Important", "product_ids": [ "red_hat_enterprise_linux_ai_(rhel_ai)_3:hdf5.src" ] } ], "title": "hdf5: h5dump: HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file" } ] }