{
  "document" : {
    "aggregate_severity" : {
      "namespace" : "https://access.redhat.com/security/updates/classification/",
      "text" : "Important"
    },
    "category" : "csaf_security_advisory",
    "csaf_version" : "2.0",
    "distribution" : {
      "text" : "Copyright © Red Hat, Inc. All rights reserved.",
      "tlp" : {
        "label" : "WHITE",
        "url" : "https://www.first.org/tlp/"
      }
    },
    "lang" : "en",
    "notes" : [ {
      "category" : "summary",
      "text" : "An update for Red Hat Hardened Images RPMs is now available.",
      "title" : "Topic"
    }, {
      "category" : "general",
      "text" : "This update includes the following RPMs:\n\nlibxml2:\n  * libxml2-16-2.15.3-0.1.hum1 (aarch64, x86_64)\n  * libxml2-2.15.3-0.1.hum1 (aarch64, x86_64)\n  * libxml2-devel-2.15.3-0.1.hum1 (aarch64, x86_64)\n  * libxml2-static-2.15.3-0.1.hum1 (aarch64, x86_64)\n  * python3-libxml2-2.15.3-0.1.hum1 (aarch64, x86_64)\n  * libxml2-2.15.3-0.1.hum1.src (src)",
      "title" : "Details"
    }, {
      "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 Red Hat Inc. and provide a link to the original.",
      "title" : "Terms of Use"
    } ],
    "publisher" : {
      "category" : "vendor",
      "contact_details" : "https://access.redhat.com/security/team/contact/",
      "issuing_authority" : "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name" : "Red Hat Product Security",
      "namespace" : "https://www.redhat.com"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "https://access.redhat.com/errata/RHSA-2026:11503",
      "url" : "https://access.redhat.com/errata/RHSA-2026:11503"
    }, {
      "category" : "external",
      "summary" : "https://images.redhat.com/",
      "url" : "https://images.redhat.com/"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/cve/CVE-2025-7425",
      "url" : "https://access.redhat.com/security/cve/CVE-2025-7425"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/updates/classification/",
      "url" : "https://access.redhat.com/security/updates/classification/"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/cve/CVE-2026-6732",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-6732"
    }, {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_11503.json"
    } ],
    "title" : "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking" : {
      "current_release_date" : "2026-04-30T17:11:03+00:00",
      "generator" : {
        "date" : "2026-04-30T17:11:03+00:00",
        "engine" : {
          "name" : "Red Hat SDEngine",
          "version" : "4.7.7"
        }
      },
      "id" : "RHSA-2026:11503",
      "initial_release_date" : "2026-04-29T05:59:17+00:00",
      "revision_history" : [ {
        "date" : "2026-04-29T05:59:17+00:00",
        "number" : "1",
        "summary" : "Initial version"
      }, {
        "date" : "2026-04-30T17:06:10+00:00",
        "number" : "2",
        "summary" : "Last updated version"
      }, {
        "date" : "2026-04-30T17:11:03+00:00",
        "number" : "3",
        "summary" : "Last generated version"
      } ],
      "status" : "final",
      "version" : "3"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_name",
          "name" : "Red Hat Hardened Images",
          "product" : {
            "name" : "Red Hat Hardened Images",
            "product_id" : "Red Hat Hardened Images",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:redhat:hummingbird:1"
            }
          }
        } ],
        "category" : "product_family",
        "name" : "Red Hat Hardened Images"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "libxml2-main@aarch64",
          "product" : {
            "name" : "libxml2-main@aarch64",
            "product_id" : "libxml2-main@aarch64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/libxml2-16@2.15.3-0.1.hum1?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "aarch64"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "libxml2-main@x86_64",
          "product" : {
            "name" : "libxml2-main@x86_64",
            "product_id" : "libxml2-main@x86_64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/libxml2-16@2.15.3-0.1.hum1?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "x86_64"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "libxml2-main@src",
          "product" : {
            "name" : "libxml2-main@src",
            "product_id" : "libxml2-main@src",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/libxml2@2.15.3-0.1.hum1?arch=src&distro=hummingbird-20251124&repository_id=public-hummingbird-source-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "src"
      } ],
      "category" : "vendor",
      "name" : "Red Hat"
    } ],
    "relationships" : [ {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "libxml2-main@aarch64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:libxml2-main@aarch64"
      },
      "product_reference" : "libxml2-main@aarch64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "libxml2-main@src as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:libxml2-main@src"
      },
      "product_reference" : "libxml2-main@src",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "libxml2-main@x86_64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:libxml2-main@x86_64"
      },
      "product_reference" : "libxml2-main@x86_64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    } ]
  },
  "vulnerabilities" : [ {
    "acknowledgments" : [ {
      "names" : [ "Sergei Glazunov" ],
      "organization" : "Google Project Zero"
    } ],
    "cve" : "CVE-2025-7425",
    "cwe" : {
      "id" : "CWE-416",
      "name" : "Use After Free"
    },
    "discovery_date" : "2025-07-10T09:37:28.172000+00:00",
    "ids" : [ {
      "system_name" : "Red Hat Bugzilla ID",
      "text" : "2379274"
    } ],
    "notes" : [ {
      "category" : "description",
      "text" : "A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "libxslt: libxml2: Heap Use-After-Free in libxslt caused by atype corruption in xmlAttrPtr",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "This heap-use-after-free vulnerability in libxslt is rated Important because it can lead to memory corruption and application crashes. The flaw arises when internal attribute metadata (atype) is modified by libxslt's xsltSetSourceNodeFlags() function during processing of result tree fragments. If the flag corruption prevents proper removal of ID references, later memory cleanup routines may operate on already-freed memory. Since libxslt is commonly used in server-side XML processing, this could result in denial-of-service or potentially facilitate code execution under certain memory reuse conditions.",
      "title" : "Statement"
    }, {
      "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" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ]
    },
    "references" : [ {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://access.redhat.com/security/cve/CVE-2025-7425"
    }, {
      "category" : "external",
      "summary" : "RHBZ#2379274",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2379274"
    }, {
      "category" : "external",
      "summary" : "https://www.cve.org/CVERecord?id=CVE-2025-7425",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2025-7425"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2025-7425",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-7425"
    }, {
      "category" : "external",
      "summary" : "https://gitlab.gnome.org/GNOME/libxslt/-/issues/140",
      "url" : "https://gitlab.gnome.org/GNOME/libxslt/-/issues/140"
    } ],
    "release_date" : "2025-07-10T00:00:00+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-04-29T05:59:17+00:00",
      "details" : "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
      "product_ids" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ],
      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:11503"
    }, {
      "category" : "workaround",
      "details" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
      "product_ids" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ]
    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "HIGH",
        "attackVector" : "LOCAL",
        "availabilityImpact" : "HIGH",
        "baseScore" : 7.8,
        "baseSeverity" : "HIGH",
        "confidentialityImpact" : "NONE",
        "integrityImpact" : "HIGH",
        "privilegesRequired" : "NONE",
        "scope" : "CHANGED",
        "userInteraction" : "NONE",
        "vectorString" : "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H",
        "version" : "3.1"
      },
      "products" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ]
    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Important"
    } ],
    "title" : "libxslt: libxml2: Heap Use-After-Free in libxslt caused by atype corruption in xmlAttrPtr"
  }, {
    "acknowledgments" : [ {
      "names" : [ "Ariel Schon" ]
    } ],
    "cve" : "CVE-2026-6732",
    "cwe" : {
      "id" : "CWE-843",
      "name" : "Access of Resource Using Incompatible Type ('Type Confusion')"
    },
    "discovery_date" : "2026-04-23T22:04:33.973000+00:00",
    "ids" : [ {
      "system_name" : "Red Hat Bugzilla ID",
      "text" : "2461300"
    } ],
    "notes" : [ {
      "category" : "description",
      "text" : "A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "libxml2: libxml2: Denial of Service via crafted XSD-validated document",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "Per upstream:\n> It's NOT recommended to use this software to process untrusted data. There is a lot of ways that a malicious crafted xml could exploit a hidden vulnerability in the software.",
      "title" : "Statement"
    }, {
      "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" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ]
    },
    "references" : [ {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-6732"
    }, {
      "category" : "external",
      "summary" : "RHBZ#2461300",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2461300"
    }, {
      "category" : "external",
      "summary" : "https://www.cve.org/CVERecord?id=CVE-2026-6732",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2026-6732"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2026-6732",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-6732"
    }, {
      "category" : "external",
      "summary" : "https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097",
      "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097"
    }, {
      "category" : "external",
      "summary" : "https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411",
      "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411"
    } ],
    "release_date" : "2026-04-16T00:00:00+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-04-29T05:59:17+00:00",
      "details" : "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
      "product_ids" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ],
      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:11503"
    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "LOW",
        "attackVector" : "ADJACENT_NETWORK",
        "availabilityImpact" : "HIGH",
        "baseScore" : 6.5,
        "baseSeverity" : "MEDIUM",
        "confidentialityImpact" : "NONE",
        "integrityImpact" : "NONE",
        "privilegesRequired" : "NONE",
        "scope" : "UNCHANGED",
        "userInteraction" : "NONE",
        "vectorString" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version" : "3.1"
      },
      "products" : [ "Red Hat Hardened Images:libxml2-main@aarch64", "Red Hat Hardened Images:libxml2-main@src", "Red Hat Hardened Images:libxml2-main@x86_64" ]
    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Moderate"
    } ],
    "title" : "libxml2: libxml2: Denial of Service via crafted XSD-validated document"
  } ]
}