{ "document": { "aggregate_severity": { "text": "Critical" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "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 Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/centos8.5els/vex/2026/cve-2026-22184-els_os-centos8_5els.json" } ], "tracking": { "current_release_date": "2026-02-13T17:40:00Z", "generator": { "date": "2026-02-13T17:40:00Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-22184-ELS_OS-CENTOS8.5ELS", "initial_release_date": "2026-01-07T21:16:00Z", "revision_history": [ { "date": "2026-01-07T21:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-02-09T14:40:14Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-02-13T17:40:00Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2026-22184" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8.5", "product": { "name": "Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8.5:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "product": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "product_id": "zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib@1.2.11-17.el8.tuxcare.els2?arch=i686" } } }, { "category": "product_version", "name": "zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "product": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "product_id": "zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib@1.2.11-17.el8.tuxcare.els3?arch=i686" } } }, { "category": "product_version", "name": "zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "product": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "product_id": "zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib@1.2.11-17.el8.tuxcare.els1?arch=i686" } } }, { "category": "product_version", "name": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "product": { "name": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "product_id": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib-devel@1.2.11-17.el8.tuxcare.els3?arch=i686" } } }, { "category": "product_version", "name": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "product": { "name": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "product_id": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib-static@1.2.11-17.el8.tuxcare.els3?arch=i686" } } } ], "category": "architecture", "name": "i686" }, { "branches": [ { "category": "product_version", "name": "zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "product": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "product_id": "zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib@1.2.11-17.el8.tuxcare.els2?arch=x86_64" } } }, { "category": "product_version", "name": "zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product_id": "zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib@1.2.11-17.el8.tuxcare.els3?arch=x86_64" } } }, { "category": "product_version", "name": "zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "product": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "product_id": "zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib@1.2.11-17.el8.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product": { "name": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product_id": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib-devel@1.2.11-17.el8.tuxcare.els3?arch=x86_64" } } }, { "category": "product_version", "name": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product": { "name": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product_id": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/zlib-static@1.2.11-17.el8.tuxcare.els3?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els2.i686 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.i686" }, "product_reference": "zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64" }, "product_reference": "zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els3.i686 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.i686" }, "product_reference": "zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64" }, "product_reference": "zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els1.i686 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.i686" }, "product_reference": "zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64" }, "product_reference": "zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686" }, "product_reference": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64" }, "product_reference": "zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686" }, "product_reference": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64" }, "product_reference": "zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64", "relates_to_product_reference": "CentOS-8.5" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-22184", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "notes": [ { "category": "description", "text": "zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer.", "title": "Vulnerability description" }, { "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" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-22184" }, { "category": "external", "summary": "https://github.com/madler/zlib", "url": "https://github.com/madler/zlib" }, { "category": "external", "summary": "https://seclists.org/fulldisclosure/2026/Jan/3", "url": "https://seclists.org/fulldisclosure/2026/Jan/3" }, { "category": "external", "summary": "https://www.vulncheck.com/advisories/zlib-untgz-global-buffer-overflow-in-tgzfname", "url": "https://www.vulncheck.com/advisories/zlib-untgz-global-buffer-overflow-in-tgzfname" }, { "category": "external", "summary": "https://zlib.net/", "url": "https://zlib.net/" }, { "category": "external", "summary": "https://github.com/madler/zlib/issues/1142", "url": "https://github.com/madler/zlib/issues/1142" } ], "release_date": "2026-01-07T21:16:00Z", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Critical" }, { "category": "impact", "details": "critical", "product_ids": [ "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els1.x86_64", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els2.x86_64", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-0:1.2.11-17.el8.tuxcare.els3.x86_64", "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-devel-0:1.2.11-17.el8.tuxcare.els3.x86_64", "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.i686", "CentOS-8.5:zlib-static-0:1.2.11-17.el8.tuxcare.els3.x86_64" ] } ] } ] }