{ "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-2025-49794: fix use-after-free issue triggered by processing certain\n elements in input XML file.\n- CVE-2025-49796: fix memory corruption issue triggered by processing certain\n sch:name elements from input XML file\n- CVE-2025-6021: fix integer overflow in buffer size calculations to prevent\n stack-based buffer overflow", "title": "Details" } ], "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/centos-stream8els/advisories/2025/clsa-2025_1752654590.json" }, { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2025:1752654590", "url": "https://cve.tuxcare.com/els/releases/CLSA-2025:1752654590" } ], "tracking": { "current_release_date": "2025-07-16T08:30:55Z", "generator": { "date": "2025-07-16T08:30:55Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2025:1752654590", "initial_release_date": "2025-07-16T08:30:55Z", "revision_history": [ { "date": "2025-07-16T08:30:55Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "libxml2: Fix of 3 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": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "product": { "name": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "product_id": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/libxml2-devel@2.9.7-18.el8.tuxcare.els7?arch=i686" } } }, { "category": "product_version", "name": "libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "product": { "name": "libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "product_id": "libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/libxml2@2.9.7-18.el8.tuxcare.els7?arch=i686" } } } ], "category": "architecture", "name": "i686" }, { "branches": [ { "category": "product_version", "name": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product": { "name": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_id": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/libxml2-devel@2.9.7-18.el8.tuxcare.els7?arch=x86_64" } } }, { "category": "product_version", "name": "python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product": { "name": "python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_id": "python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/python3-libxml2@2.9.7-18.el8.tuxcare.els7?arch=x86_64" } } }, { "category": "product_version", "name": "libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product": { "name": "libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_id": "libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/libxml2@2.9.7-18.el8.tuxcare.els7?arch=x86_64" } } }, { "category": "product_version", "name": "libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product": { "name": "libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_id": "libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/libxml2-static@2.9.7-18.el8.tuxcare.els7?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686" }, "product_reference": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64" }, "product_reference": "libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64" }, "product_reference": "python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "libxml2-0:2.9.7-18.el8.tuxcare.els7.i686 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686" }, "product_reference": "libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64" }, "product_reference": "libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" }, "product_reference": "libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64", "relates_to_product_reference": "CentOS-Stream-8" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-49796", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "description", "text": "A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory.", "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" } ], "product_status": { "fixed": [ "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-49796" } ], "release_date": "2025-06-11T00:00:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "version": "3.1" }, "products": [ "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" ] } ], "threats": [ { "category": "impact", "details": "High" } ] }, { "cve": "CVE-2025-49794", "cwe": { "id": "CWE-825", "name": "Expired Pointer Dereference" }, "notes": [ { "category": "description", "text": "A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.", "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" } ], "product_status": { "fixed": [ "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-49794" } ], "release_date": "2025-06-10T00:00:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "version": "3.1" }, "products": [ "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" ] } ], "threats": [ { "category": "impact", "details": "High" } ] }, { "cve": "CVE-2025-6021", "notes": [ { "category": "description", "text": "A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.", "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" } ], "product_status": { "fixed": [ "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-6021" } ], "release_date": "2025-06-12T00:00:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-devel-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:python3-libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.i686", "CentOS-Stream-8:libxml2-0:2.9.7-18.el8.tuxcare.els7.x86_64", "CentOS-Stream-8:libxml2-static-0:2.9.7-18.el8.tuxcare.els7.x86_64" ] } ], "threats": [ { "category": "impact", "details": "High" } ] } ] }