{ "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-2026-34379.json" } ], "title": "OpenEXR: OpenEXR: Denial of Service due to misaligned memory write during EXR file decoding", "tracking": { "current_release_date": "2026-06-30T03:52:23+00:00", "generator": { "date": "2026-06-30T03:52:23+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.3.0" } }, "id": "CVE-2026-34379", "initial_release_date": "2026-04-06T15:21:06.556000+00:00", "revision_history": [ { "date": "2026-04-06T15:21:06.556000+00:00", "number": "1", "summary": "Initial version" }, { "date": "2026-04-06T19:48:27+00:00", "number": "2", "summary": "Current version" }, { "date": "2026-06-30T03:52:23+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 10", "product": { "name": "Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:10" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 6", "product": { "name": "Red Hat Enterprise Linux 6", "product_id": "red_hat_enterprise_linux_6", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:6" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 7", "product": { "name": "Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 8", "product": { "name": "Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:8" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 9", "product": { "name": "Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:9" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" }, { "category": "product_version", "name": "OpenEXR.src", "product": { "name": "OpenEXR.src", "product_id": "OpenEXR.src", "product_identification_helper": { "purl": "pkg:rpm/redhat/OpenEXR?arch=src" } } }, { "category": "product_version", "name": "OpenEXR-libs", "product": { "name": "OpenEXR-libs", "product_id": "OpenEXR-libs", "product_identification_helper": { "purl": "pkg:rpm/redhat/OpenEXR-libs" } } }, { "category": "product_version", "name": "OpenEXR-devel", "product": { "name": "OpenEXR-devel", "product_id": "OpenEXR-devel", "product_identification_helper": { "purl": "pkg:rpm/redhat/OpenEXR-devel" } } }, { "category": "product_version", "name": "OpenEXR", "product": { "name": "OpenEXR", "product_id": "OpenEXR", "product_identification_helper": { "purl": "pkg:rpm/redhat/OpenEXR" } } } ], "category": "vendor", "name": "Red Hat" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "OpenEXR.src as a component of Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10:OpenEXR.src" }, "product_reference": "OpenEXR.src", "relates_to_product_reference": "red_hat_enterprise_linux_10" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR-devel as a component of Red Hat Enterprise Linux 6", "product_id": "red_hat_enterprise_linux_6:OpenEXR-devel" }, "product_reference": "OpenEXR-devel", "relates_to_product_reference": "red_hat_enterprise_linux_6" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR-libs as a component of Red Hat Enterprise Linux 6", "product_id": "red_hat_enterprise_linux_6:OpenEXR-libs" }, "product_reference": "OpenEXR-libs", "relates_to_product_reference": "red_hat_enterprise_linux_6" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR.src as a component of Red Hat Enterprise Linux 6", "product_id": "red_hat_enterprise_linux_6:OpenEXR.src" }, "product_reference": "OpenEXR.src", "relates_to_product_reference": "red_hat_enterprise_linux_6" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR as a component of Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7:OpenEXR" }, "product_reference": "OpenEXR", "relates_to_product_reference": "red_hat_enterprise_linux_7" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR-devel as a component of Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7:OpenEXR-devel" }, "product_reference": "OpenEXR-devel", "relates_to_product_reference": "red_hat_enterprise_linux_7" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR-libs as a component of Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7:OpenEXR-libs" }, "product_reference": "OpenEXR-libs", "relates_to_product_reference": "red_hat_enterprise_linux_7" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR.src as a component of Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7:OpenEXR.src" }, "product_reference": "OpenEXR.src", "relates_to_product_reference": "red_hat_enterprise_linux_7" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR-devel as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:OpenEXR-devel" }, "product_reference": "OpenEXR-devel", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR-libs as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:OpenEXR-libs" }, "product_reference": "OpenEXR-libs", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR.src as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:OpenEXR.src" }, "product_reference": "OpenEXR.src", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "OpenEXR.src as a component of Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9:OpenEXR.src" }, "product_reference": "OpenEXR.src", "relates_to_product_reference": "red_hat_enterprise_linux_9" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-34379", "cwe": { "id": "CWE-475", "name": "Undefined Behavior for Input to API" }, "discovery_date": "2026-04-06T16:02:18.419693+00:00", "flags": [ { "label": "vulnerable_code_not_present", "product_ids": [ "red_hat_enterprise_linux_10:OpenEXR.src", "red_hat_enterprise_linux_8:OpenEXR-devel", "red_hat_enterprise_linux_8:OpenEXR-libs", "red_hat_enterprise_linux_8:OpenEXR.src", "red_hat_enterprise_linux_9:OpenEXR.src" ] } ], "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2455402" } ], "notes": [ { "category": "description", "text": "A flaw was found in OpenEXR, an image storage format library for the motion picture industry. A remote attacker could exploit this vulnerability by providing a specially crafted DWA or DWAB-compressed EXR file containing a FLOAT-type channel. When the file is decoded, a misaligned memory write occurs during a half-precision to single-precision floating-point (HALF→FLOAT) conversion. This can lead to a denial of service (DoS) by crashing the application on systems with strict memory alignment enforcement, such as ARM and RISC-V architectures.", "title": "Vulnerability description" }, { "category": "summary", "text": "OpenEXR: OpenEXR: Denial of Service due to misaligned memory write during EXR file decoding", "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_6:OpenEXR-devel", "red_hat_enterprise_linux_6:OpenEXR-libs", "red_hat_enterprise_linux_6:OpenEXR.src", "red_hat_enterprise_linux_7:OpenEXR", "red_hat_enterprise_linux_7:OpenEXR-devel", "red_hat_enterprise_linux_7:OpenEXR-libs", "red_hat_enterprise_linux_7:OpenEXR.src" ], "known_not_affected": [ "red_hat_enterprise_linux_10:OpenEXR.src", "red_hat_enterprise_linux_8:OpenEXR-devel", "red_hat_enterprise_linux_8:OpenEXR-libs", "red_hat_enterprise_linux_8:OpenEXR.src", "red_hat_enterprise_linux_9:OpenEXR.src" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-34379" }, { "category": "external", "summary": "RHBZ#2455402", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455402" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-34379", "url": "https://www.cve.org/CVERecord?id=CVE-2026-34379" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-34379", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34379" }, { "category": "external", "summary": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-w88v-vqhq-5p24", "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-w88v-vqhq-5p24" } ], "release_date": "2026-04-06T15:21:06.556000+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_6:OpenEXR-devel", "red_hat_enterprise_linux_6:OpenEXR-libs", "red_hat_enterprise_linux_6:OpenEXR.src", "red_hat_enterprise_linux_7:OpenEXR", "red_hat_enterprise_linux_7:OpenEXR-devel", "red_hat_enterprise_linux_7:OpenEXR-libs", "red_hat_enterprise_linux_7:OpenEXR.src" ] }, { "category": "no_fix_planned", "details": "Out of support scope", "product_ids": [ "red_hat_enterprise_linux_6:OpenEXR-devel", "red_hat_enterprise_linux_6:OpenEXR-libs", "red_hat_enterprise_linux_6:OpenEXR.src", "red_hat_enterprise_linux_7:OpenEXR", "red_hat_enterprise_linux_7:OpenEXR-devel", "red_hat_enterprise_linux_7:OpenEXR-libs", "red_hat_enterprise_linux_7:OpenEXR.src" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H", "version": "3.1" }, "products": [ "red_hat_enterprise_linux_10:OpenEXR.src", "red_hat_enterprise_linux_6:OpenEXR-devel", "red_hat_enterprise_linux_6:OpenEXR-libs", "red_hat_enterprise_linux_6:OpenEXR.src", "red_hat_enterprise_linux_7:OpenEXR", "red_hat_enterprise_linux_7:OpenEXR-devel", "red_hat_enterprise_linux_7:OpenEXR-libs", "red_hat_enterprise_linux_7:OpenEXR.src", "red_hat_enterprise_linux_8:OpenEXR-devel", "red_hat_enterprise_linux_8:OpenEXR-libs", "red_hat_enterprise_linux_8:OpenEXR.src", "red_hat_enterprise_linux_9:OpenEXR.src" ] } ], "threats": [ { "category": "impact", "details": "Important", "product_ids": [ "red_hat_enterprise_linux_10:OpenEXR.src", "red_hat_enterprise_linux_6:OpenEXR-devel", "red_hat_enterprise_linux_6:OpenEXR-libs", "red_hat_enterprise_linux_6:OpenEXR.src", "red_hat_enterprise_linux_7:OpenEXR", "red_hat_enterprise_linux_7:OpenEXR-devel", "red_hat_enterprise_linux_7:OpenEXR-libs", "red_hat_enterprise_linux_7:OpenEXR.src", "red_hat_enterprise_linux_8:OpenEXR-devel", "red_hat_enterprise_linux_8:OpenEXR-libs", "red_hat_enterprise_linux_8:OpenEXR.src", "red_hat_enterprise_linux_9:OpenEXR.src" ] } ], "title": "OpenEXR: OpenEXR: Denial of Service due to misaligned memory write during EXR file decoding" } ] }