{
  "document" : {
    "aggregate_severity" : {
      "namespace" : "https://access.redhat.com/security/updates/classification/",
      "text" : "Moderate"
    },
    "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\nharfbuzz:\n  * harfbuzz-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-cairo-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-devel-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-gpu-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-icu-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-raster-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-vector-14.1.0-2.hum1 (aarch64, x86_64)\n  * harfbuzz-14.1.0-2.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-2026:7701",
      "url" : "https://access.redhat.com/errata/RHSA-2026:7701"
    }, {
      "category" : "external",
      "summary" : "https://images.redhat.com/",
      "url" : "https://images.redhat.com/"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/cve/CVE-2026-22693",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-22693"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/updates/classification/",
      "url" : "https://access.redhat.com/security/updates/classification/"
    }, {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7701.json"
    } ],
    "title" : "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking" : {
      "current_release_date" : "2026-04-19T19:41:49+00:00",
      "generator" : {
        "date" : "2026-04-19T19:41:49+00:00",
        "engine" : {
          "name" : "Red Hat SDEngine",
          "version" : "4.7.5"
        }
      },
      "id" : "RHSA-2026:7701",
      "initial_release_date" : "2026-04-13T06:58:46+00:00",
      "revision_history" : [ {
        "date" : "2026-04-13T06:58:46+00:00",
        "number" : "1",
        "summary" : "Initial version"
      }, {
        "date" : "2026-04-18T20:01:35+00:00",
        "number" : "2",
        "summary" : "Last updated version"
      }, {
        "date" : "2026-04-19T19:41:49+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" : "harfbuzz-main@aarch64",
          "product" : {
            "name" : "harfbuzz-main@aarch64",
            "product_id" : "harfbuzz-main@aarch64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/harfbuzz@14.1.0-2.hum1?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "aarch64"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "harfbuzz-main@src",
          "product" : {
            "name" : "harfbuzz-main@src",
            "product_id" : "harfbuzz-main@src",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/harfbuzz@14.1.0-2.hum1?arch=src&distro=hummingbird-20251124&repository_id=public-hummingbird-source-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "src"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "harfbuzz-main@x86_64",
          "product" : {
            "name" : "harfbuzz-main@x86_64",
            "product_id" : "harfbuzz-main@x86_64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/harfbuzz@14.1.0-2.hum1?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "x86_64"
      } ],
      "category" : "vendor",
      "name" : "Red Hat"
    } ],
    "relationships" : [ {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "harfbuzz-main@aarch64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:harfbuzz-main@aarch64"
      },
      "product_reference" : "harfbuzz-main@aarch64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "harfbuzz-main@src as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:harfbuzz-main@src"
      },
      "product_reference" : "harfbuzz-main@src",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "harfbuzz-main@x86_64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:harfbuzz-main@x86_64"
      },
      "product_reference" : "harfbuzz-main@x86_64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-22693",
    "cwe" : {
      "id" : "CWE-476",
      "name" : "NULL Pointer Dereference"
    },
    "discovery_date" : "2026-01-10T06:01:40.282084+00:00",
    "ids" : [ {
      "system_name" : "Red Hat Bugzilla ID",
      "text" : "2428439"
    } ],
    "notes" : [ {
      "category" : "description",
      "text" : "A null pointer dereference vector has been discovered in the harfbuzz package. A null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh:1672-1673. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "harfbuzz: Null Pointer Dereference in harfbuzz",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "This MODERATE severity null pointer dereference in the HarfBuzz library may cause a denial of service (segmentation fault) when memory allocation fails in hb_malloc.\n\nThe issue affects Red Hat products that include and link against HarfBuzz, such as OpenJDK builds with the java.desktop module and certain RHEL components like Firefox and Thunderbird.\n\nThe java-17-openjdk-headless and java-21-openjdk-headless packages do not include java.desktop and do not link against HarfBuzz; therefore, headless-only environments are not affected.",
      "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:harfbuzz-main@aarch64", "Red Hat Hardened Images:harfbuzz-main@src", "Red Hat Hardened Images:harfbuzz-main@x86_64" ]
    },
    "references" : [ {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-22693"
    }, {
      "category" : "external",
      "summary" : "RHBZ#2428439",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2428439"
    }, {
      "category" : "external",
      "summary" : "https://www.cve.org/CVERecord?id=CVE-2026-22693",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2026-22693"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2026-22693",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-22693"
    }, {
      "category" : "external",
      "summary" : "https://github.com/harfbuzz/harfbuzz/commit/1265ff8d990284f04d8768f35b0e20ae5f60daae",
      "url" : "https://github.com/harfbuzz/harfbuzz/commit/1265ff8d990284f04d8768f35b0e20ae5f60daae"
    }, {
      "category" : "external",
      "summary" : "https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-xvjr-f2r9-c7ww",
      "url" : "https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-xvjr-f2r9-c7ww"
    } ],
    "release_date" : "2026-01-10T05:53:21.019000+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-04-13T06:58:46+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:harfbuzz-main@aarch64", "Red Hat Hardened Images:harfbuzz-main@src", "Red Hat Hardened Images:harfbuzz-main@x86_64" ],
      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:7701"
    }, {
      "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:harfbuzz-main@aarch64", "Red Hat Hardened Images:harfbuzz-main@src", "Red Hat Hardened Images:harfbuzz-main@x86_64" ]
    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "LOW",
        "attackVector" : "NETWORK",
        "availabilityImpact" : "LOW",
        "baseScore" : 5.3,
        "baseSeverity" : "MEDIUM",
        "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:L",
        "version" : "3.1"
      },
      "products" : [ "Red Hat Hardened Images:harfbuzz-main@aarch64", "Red Hat Hardened Images:harfbuzz-main@src", "Red Hat Hardened Images:harfbuzz-main@x86_64" ]
    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Moderate"
    } ],
    "title" : "harfbuzz: Null Pointer Dereference in harfbuzz"
  } ]
}