{ "document": { "aggregate_severity": { "text": "High" }, "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/centos6els/vex/2026/cve-2026-33846-els_os-centos6els.json" } ], "tracking": { "current_release_date": "2026-09-15T08:59:07Z", "generator": { "date": "2026-09-15T08:59:07Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-33846-ELS_OS-CENTOS6ELS", "initial_release_date": "2026-05-04T10:15:00Z", "revision_history": [ { "date": "2026-05-04T10:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-09-15T08:59:07Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2026-33846" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 6", "product": { "name": "Community Enterprise Operating System 6", "product_id": "CentOS-6", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:6:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686", "product": { "name": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686", "product_id": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls-devel@2.12.23-22.el6.tuxcare.els1?arch=i686" } } }, { "category": "product_version", "name": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686", "product": { "name": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686", "product_id": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls-guile@2.12.23-22.el6.tuxcare.els1?arch=i686" } } }, { "category": "product_version", "name": "gnutls-0:2.12.23-22.el6.tuxcare.els1.i686", "product": { "name": "gnutls-0:2.12.23-22.el6.tuxcare.els1.i686", "product_id": "gnutls-0:2.12.23-22.el6.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls@2.12.23-22.el6.tuxcare.els1?arch=i686" } } } ], "category": "architecture", "name": "i686" }, { "branches": [ { "category": "product_version", "name": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product": { "name": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_id": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls-devel@2.12.23-22.el6.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product": { "name": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_id": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls-guile@2.12.23-22.el6.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product": { "name": "gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_id": "gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls-utils@2.12.23-22.el6.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product": { "name": "gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_id": "gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/gnutls@2.12.23-22.el6.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686" }, "product_reference": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64" }, "product_reference": "gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64" }, "product_reference": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686" }, "product_reference": "gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64" }, "product_reference": "gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64" }, "product_reference": "gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "gnutls-0:2.12.23-22.el6.tuxcare.els1.i686 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:gnutls-0:2.12.23-22.el6.tuxcare.els1.i686" }, "product_reference": "gnutls-0:2.12.23-22.el6.tuxcare.els1.i686", "relates_to_product_reference": "CentOS-6" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33846", "cwe": { "id": "CWE-130", "name": "Improper Handling of Length Parameter Inconsistency" }, "notes": [ { "category": "description", "text": "A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.", "title": "Vulnerability description" }, { "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-6:gnutls-0:2.12.23-22.el6.tuxcare.els1.i686", "CentOS-6:gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64", "CentOS-6:gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686", "CentOS-6:gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64", "CentOS-6:gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686", "CentOS-6:gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64", "CentOS-6:gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-33846" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13274", "url": "https://access.redhat.com/errata/RHSA-2026:13274" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20611", "url": "https://access.redhat.com/errata/RHSA-2026:20611" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20612", "url": "https://access.redhat.com/errata/RHSA-2026:20612" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20613", "url": "https://access.redhat.com/errata/RHSA-2026:20613" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:26319", "url": "https://access.redhat.com/errata/RHSA-2026:26319" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:26409", "url": "https://access.redhat.com/errata/RHSA-2026:26409" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:29197", "url": "https://access.redhat.com/errata/RHSA-2026:29197" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:30004", "url": "https://access.redhat.com/errata/RHSA-2026:30004" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:30849", "url": "https://access.redhat.com/errata/RHSA-2026:30849" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:30850", "url": "https://access.redhat.com/errata/RHSA-2026:30850" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:32962", "url": "https://access.redhat.com/errata/RHSA-2026:32962" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:33125", "url": "https://access.redhat.com/errata/RHSA-2026:33125" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:34372", "url": "https://access.redhat.com/errata/RHSA-2026:34372" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:36004", "url": "https://access.redhat.com/errata/RHSA-2026:36004" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:36005", "url": "https://access.redhat.com/errata/RHSA-2026:36005" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:36006", "url": "https://access.redhat.com/errata/RHSA-2026:36006" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:41921", "url": "https://access.redhat.com/errata/RHSA-2026:41921" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:56786", "url": "https://access.redhat.com/errata/RHSA-2026:56786" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:56853", "url": "https://access.redhat.com/errata/RHSA-2026:56853" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:56911", "url": "https://access.redhat.com/errata/RHSA-2026:56911" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:57402", "url": "https://access.redhat.com/errata/RHSA-2026:57402" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:57483", "url": "https://access.redhat.com/errata/RHSA-2026:57483" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:58981", "url": "https://access.redhat.com/errata/RHSA-2026:58981" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:59831", "url": "https://access.redhat.com/errata/RHSA-2026:59831" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:60019", "url": "https://access.redhat.com/errata/RHSA-2026:60019" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-33846", "url": "https://access.redhat.com/security/cve/CVE-2026-33846" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2450625", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450625" }, { "category": "external", "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33846.json", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33846.json" } ], "release_date": "2026-05-04T10:15:00Z", "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "date": "2026-09-05T12:19:39.018177Z", "details": "important", "product_ids": [ "CentOS-6:gnutls-0:2.12.23-22.el6.tuxcare.els1.i686", "CentOS-6:gnutls-0:2.12.23-22.el6.tuxcare.els1.x86_64", "CentOS-6:gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.i686", "CentOS-6:gnutls-devel-0:2.12.23-22.el6.tuxcare.els1.x86_64", "CentOS-6:gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.i686", "CentOS-6:gnutls-guile-0:2.12.23-22.el6.tuxcare.els1.x86_64", "CentOS-6:gnutls-utils-0:2.12.23-22.el6.tuxcare.els1.x86_64" ] } ] } ] }