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This issue can result in memory corruption or a denial of service when processing crafted input."}, {"lang": "es", "value": "Se detect\u00f3 una falla en la funci\u00f3n xmlBuildQName de libxml2. Los desbordamientos de enteros en los c\u00e1lculos del tama\u00f1o del b\u00fafer pueden provocar un desbordamiento del b\u00fafer en la pila. Este problema puede provocar corrupci\u00f3n de memoria o una denegaci\u00f3n de servicio al procesar entradas manipuladas."}], "id": "CVE-2025-6021", "lastModified": "2025-10-22T13:08:44.160", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Secondary"}]}, "published": "2025-06-12T13:15:25.590", "references": [{"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:10630"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:10698"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:10699"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:11580"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12098"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12099"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12199"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12237"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12239"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12240"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:12241"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:13267"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:13289"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:13325"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:13335"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:13336"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:14059"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:14396"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:15308"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2025:15672"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2025-6021"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2372406"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/926"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Ahmed Lekssays for reporting this issue.", "affected_release": [{"advisory": "RHSA-2025:10630", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "libxml2-0:2.12.5-7.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-07-08T00:00:00Z"}, {"advisory": "RHSA-2025:10698", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "libxml2-0:2.9.7-21.el8_10.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-09T00:00:00Z"}, {"advisory": "RHSA-2025:10698", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "libxml2-0:2.9.7-21.el8_10.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-09T00:00:00Z"}, {"advisory": "RHSA-2025:10699", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "libxml2-0:2.9.13-10.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-09T00:00:00Z"}, {"advisory": "RHSA-2025:10699", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "libxml2-0:2.9.13-10.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-09T00:00:00Z"}], "bugzilla": {"description": "libxml2: Integer Overflow in xmlBuildQName() Leads to Stack Buffer Overflow in libxml2", "id": "2372406", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2372406"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "(CWE-190|CWE-121)", "details": ["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.", "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."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Users are strongly advised to apply vendor-supplied patches as soon as they become available to address the underlying integer overflow flaw in the affected code."}, "name": "CVE-2025-6021", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libxml2", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "libxml2", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Affected", "package_name": "libxml2", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-06-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-6021\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-6021"], "statement": "This vulnerability is rated Moderate due to the lack of confidentiality impact and limited integrity concerns, with the main risk being potential denial-of-service from a crash. Exploitation requires crafted XML input and specific application behavior using xmlBuildQName. While it\u2019s a write overflow, modern mitigations make remote code execution unlikely.", "threat_severity": "Moderate"}