{ "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-2026-25210: add an integer overflow check before the tag buffer doubling\n in doContent(), so the reallocation size can no longer wrap\n- CVE-2026-56407: cap the entity value pool length against signed integer\n overflow in doProlog() before it is stored into m_declEntity->textLen\n- CVE-2026-56408: add the upstream integer overflow guard to copyString();\n with XML_Char == char as built here the guard is inert, and it takes effect\n only in an XML_UNICODE build where sizeof(XML_Char) > 1", "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-2026:1790931787", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.8esu/advisories/2026/clsa-2026_1790931787.json" } ], "tracking": { "current_release_date": "2026-10-05T10:13:37Z", "generator": { "date": "2026-10-05T10:13:37Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1790931787", "initial_release_date": "2026-10-02T09:05:10Z", "revision_history": [ { "date": "2026-10-02T09:05:10Z", "number": "1", "summary": "Initial version" }, { "date": "2026-10-05T10:13:37Z", "number": "2", "summary": "Update document" } ], "status": "final", "version": "2" }, "title": "expat: Fix of 6 CVEs" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.8", "product": { "name": "AlmaLinux 9.8", "product_id": "AlmaLinux-9.8", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.8:*:*:*:*:*:*:*" } } } ], 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Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-56131" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat/pull/1267", "url": "https://github.com/libexpat/libexpat/pull/1267" } ], "release_date": "2026-06-19T06:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-02T09:03:10.424148Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787", "product_ids": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", 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overflow in doProlog that is related to storeEntityValue and entity textLen.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", 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"AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787" } ], "threats": [ { "category": "impact", "details": "Critical" } ] }, { "cve": "CVE-2026-76957", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-76957" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat/pull/1322", "url": "https://github.com/libexpat/libexpat/pull/1322" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat/pull/1329", "url": "https://github.com/libexpat/libexpat/pull/1329" } ], "release_date": "2026-08-20T05:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-02T09:03:10.424148Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787", "product_ids": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-93990", "cwe": { "id": "CWE-176", "name": "Improper Handling of Unicode Encoding" }, "notes": [ { "category": "description", "text": "Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted. Attackers can supply UTF-16 encoded XML containing lone high surrogates that consume the following code unit, causing Expat to pass unpaired surrogates to applications built with XML_UNICODE and to silently replace input characters in other builds.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-93990" }, { "category": "external", "summary": "https://blog.hartwork.org/posts/expat-2-8-5-released/", "url": "https://blog.hartwork.org/posts/expat-2-8-5-released/" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat", "url": "https://github.com/libexpat/libexpat" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat/commit/ff6e1d7e750bbe245178f51a47a965dc8342861a", "url": "https://github.com/libexpat/libexpat/commit/ff6e1d7e750bbe245178f51a47a965dc8342861a" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat/pull/1282", "url": "https://github.com/libexpat/libexpat/pull/1282" }, { "category": "external", "summary": "https://github.com/libexpat/libexpat/releases/tag/R_2_8_5", "url": "https://github.com/libexpat/libexpat/releases/tag/R_2_8_5" }, { "category": "external", "summary": "https://www.vulncheck.com/advisories/expat-through-2.8.4-malformed-utf-16-acceptance-via-unchecked-surrogate", "url": "https://www.vulncheck.com/advisories/expat-through-2.8.4-malformed-utf-16-acceptance-via-unchecked-surrogate" } ], "release_date": "2026-09-19T23:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-02T09:03:10.424148Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787", "product_ids": [ "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "AlmaLinux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-devel-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.aarch64", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.i686", "Rocky Linux-9.8:expat-static-0:2.5.0-6.el9_8.5.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790931787" } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }