{ "document": { "aggregate_severity": { "text": "Critical" }, "category": "csaf_security_advisory", "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" }, { "category": "details", "text": "CVE-2025-30472: stack buffer overflow in orf_token_endian_convert()\n- CVE-2026-35091: out-of-bounds read via check_memb_commit_token_sanity()\n- CVE-2026-35092: integer overflow in check_memb_join_sanity()\n- CVE-2026-81665: heap buffer overflow in totempg_deliver_fn()", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/centos-stream8els/advisories/2026/clsa-2026_1793029519.json" } ], "tracking": { "current_release_date": "2026-10-26T15:46:30Z", "generator": { "date": "2026-10-26T15:46:30Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1793029519", "initial_release_date": "2026-10-26T15:46:30Z", "revision_history": [ { "date": "2026-10-26T15:46:30Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "corosync: Fix of 4 CVEs" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8", "product": { "name": "Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product": { "name": "corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_id": "corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/corosynclib@3.1.8-1.el8.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product": { "name": "corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_id": "corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/corosync@3.1.8-1.el8.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product": { "name": "corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_id": "corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/corosync-vqsim@3.1.8-1.el8.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product": { "name": "spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_id": "spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/spausedd@3.1.8-1.el8.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product": { "name": "corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_id": "corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/corosynclib-devel@3.1.8-1.el8.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64" }, "product_reference": "corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64" }, "product_reference": "corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64" }, "product_reference": "corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" }, "product_reference": "spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64" }, "product_reference": "corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-81665", "cwe": { "id": "CWE-122", "name": "Heap-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "A heap-based buffer overflow was found in Corosync's Totem Process Group (totempg) message reassembly. When processing fragmented multicast messages, the buffer used to reassemble fragments lacks a runtime bounds check in release builds. A network-adjacent attacker able to send crafted multicast protocol messages to the cluster could cause a heap buffer overflow with attacker-controlled data. This can crash the Corosync daemon, causing a denial of service to the entire cluster, and may potentially allow further exploitation given sufficient heap-corruption control.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-81665" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:67872", "url": "https://access.redhat.com/errata/RHSA-2026:67872" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:67873", "url": "https://access.redhat.com/errata/RHSA-2026:67873" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:67878", "url": "https://access.redhat.com/errata/RHSA-2026:67878" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:67879", "url": "https://access.redhat.com/errata/RHSA-2026:67879" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:67880", "url": "https://access.redhat.com/errata/RHSA-2026:67880" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:67881", "url": "https://access.redhat.com/errata/RHSA-2026:67881" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:68574", "url": "https://access.redhat.com/errata/RHSA-2026:68574" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:69277", "url": "https://access.redhat.com/errata/RHSA-2026:69277" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:69278", "url": "https://access.redhat.com/errata/RHSA-2026:69278" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:69279", "url": "https://access.redhat.com/errata/RHSA-2026:69279" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:69280", "url": "https://access.redhat.com/errata/RHSA-2026:69280" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-81665", "url": "https://access.redhat.com/security/cve/CVE-2026-81665" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2524910", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524910" } ], "release_date": "2026-09-04T09:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-26T15:45:20.874108Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519", "product_ids": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519" } ], "threats": [ { "category": "impact", "details": "Critical" } ] }, { "cve": "CVE-2026-35091", "cwe": { "id": "CWE-253", "name": "Incorrect Check of Function Return Value" }, "notes": [ { "category": "description", "text": "A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-35091" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13644", "url": "https://access.redhat.com/errata/RHSA-2026:13644" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13657", "url": "https://access.redhat.com/errata/RHSA-2026:13657" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13673", "url": "https://access.redhat.com/errata/RHSA-2026:13673" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14205", "url": "https://access.redhat.com/errata/RHSA-2026:14205" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14210", "url": "https://access.redhat.com/errata/RHSA-2026:14210" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14211", "url": "https://access.redhat.com/errata/RHSA-2026:14211" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14212", "url": "https://access.redhat.com/errata/RHSA-2026:14212" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14213", "url": "https://access.redhat.com/errata/RHSA-2026:14213" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14214", "url": "https://access.redhat.com/errata/RHSA-2026:14214" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14215", "url": "https://access.redhat.com/errata/RHSA-2026:14215" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14216", "url": "https://access.redhat.com/errata/RHSA-2026:14216" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19043", "url": "https://access.redhat.com/errata/RHSA-2026:19043" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19200", "url": "https://access.redhat.com/errata/RHSA-2026:19200" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20916", "url": "https://access.redhat.com/errata/RHSA-2026:20916" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-35091", "url": "https://access.redhat.com/security/cve/CVE-2026-35091" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2453169", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453169" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2453813", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453813" } ], "release_date": "2026-04-01T14:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-26T15:45:20.874108Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519", "product_ids": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2025-30472", "cwe": { "id": "CWE-121", "name": "Stack-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "Corosync through 3.1.9, if encryption is disabled or the attacker knows the encryption key, has a stack-based buffer overflow in orf_token_endian_convert in exec/totemsrp.c via a large UDP packet.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-30472" }, { "category": "external", "summary": "https://corosync.org", "url": "https://corosync.org/" }, { "category": "external", "summary": "https://github.com/corosync/corosync/blob/73ba225cc48ebb1903897c792065cb5e876613b0/exec/totemsrp.c#L4677", "url": "https://github.com/corosync/corosync/blob/73ba225cc48ebb1903897c792065cb5e876613b0/exec/totemsrp.c#L4677" }, { "category": "external", "summary": "https://github.com/corosync/corosync/issues/778", "url": "https://github.com/corosync/corosync/issues/778" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2025/09/msg00023.html", "url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00023.html" } ], "release_date": "2025-03-22T02:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-26T15:45:20.874108Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519", "product_ids": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519" } ], "threats": [ { "category": "impact", "details": "Critical" } ] }, { "cve": "CVE-2026-35092", "cwe": { "id": "CWE-190", "name": "Integer Overflow or Wraparound" }, "notes": [ { "category": "description", "text": "A flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-35092" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13644", "url": "https://access.redhat.com/errata/RHSA-2026:13644" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13657", "url": "https://access.redhat.com/errata/RHSA-2026:13657" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:13673", "url": "https://access.redhat.com/errata/RHSA-2026:13673" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14205", "url": "https://access.redhat.com/errata/RHSA-2026:14205" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14210", "url": "https://access.redhat.com/errata/RHSA-2026:14210" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14211", "url": "https://access.redhat.com/errata/RHSA-2026:14211" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14212", "url": "https://access.redhat.com/errata/RHSA-2026:14212" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14213", "url": "https://access.redhat.com/errata/RHSA-2026:14213" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14214", "url": "https://access.redhat.com/errata/RHSA-2026:14214" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14215", "url": "https://access.redhat.com/errata/RHSA-2026:14215" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:14216", "url": "https://access.redhat.com/errata/RHSA-2026:14216" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19043", "url": "https://access.redhat.com/errata/RHSA-2026:19043" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:19200", "url": "https://access.redhat.com/errata/RHSA-2026:19200" }, { "category": "external", "summary": "https://access.redhat.com/errata/RHSA-2026:20916", "url": "https://access.redhat.com/errata/RHSA-2026:20916" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2026-35092", "url": "https://access.redhat.com/security/cve/CVE-2026-35092" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2453169", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453169" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2453814", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453814" } ], "release_date": "2026-04-01T14:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-26T15:45:20.874108Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519", "product_ids": [ "CentOS-Stream-8:corosync-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosync-vqsim-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:corosynclib-devel-0:3.1.8-1.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:spausedd-0:3.1.8-1.el8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793029519" } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }