{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 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\ndracut:\n  * dracut-109-7.hum1 (aarch64, x86_64)\n  * dracut-caps-109-7.hum1 (aarch64, x86_64)\n  * dracut-config-generic-109-7.hum1 (aarch64, x86_64)\n  * dracut-config-rescue-109-7.hum1 (aarch64, x86_64)\n  * dracut-live-109-7.hum1 (aarch64, x86_64)\n  * dracut-network-109-7.hum1 (aarch64, x86_64)\n  * dracut-squash-109-7.hum1 (aarch64, x86_64)\n  * dracut-tools-109-7.hum1 (aarch64, x86_64)\n  * dracut-109-7.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-2026:40700",
        "url": "https://access.redhat.com/errata/RHSA-2026:40700"
      },
      {
        "category": "external",
        "summary": "https://images.redhat.com/",
        "url": "https://images.redhat.com/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-16445",
        "url": "https://access.redhat.com/security/cve/CVE-2026-16445"
      },
      {
        "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_40700.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking": {
      "current_release_date": "2026-09-21T03:06:01+00:00",
      "generator": {
        "date": "2026-09-21T03:06:01+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.21"
        }
      },
      "id": "RHSA-2026:40700",
      "initial_release_date": "2026-07-16T05:07:44+00:00",
      "revision_history": [
        {
          "date": "2026-07-16T05:07:44+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-09-04T00:36:24+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-09-21T03:06:01+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": "dracut-main@aarch64",
                "product": {
                  "name": "dracut-main@aarch64",
                  "product_id": "dracut-main@aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/dracut@109-7.hum1?arch=aarch64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "dracut-main@src",
                "product": {
                  "name": "dracut-main@src",
                  "product_id": "dracut-main@src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/dracut@109-7.hum1?arch=src\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-source-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "dracut-main@x86_64",
                "product": {
                  "name": "dracut-main@x86_64",
                  "product_id": "dracut-main@x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/dracut@109-7.hum1?arch=x86_64\u0026distro=hummingbird-20251124\u0026repository_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": "dracut-main@aarch64 as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:dracut-main@aarch64"
        },
        "product_reference": "dracut-main@aarch64",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dracut-main@src as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:dracut-main@src"
        },
        "product_reference": "dracut-main@src",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dracut-main@x86_64 as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:dracut-main@x86_64"
        },
        "product_reference": "dracut-main@x86_64",
        "relates_to_product_reference": "Red Hat Hardened Images"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Pavel Valena"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2026-16445",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "discovery_date": "2026-05-29T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2503147"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP options, such as a malicious root-path, next-server, or bootfile name, to a system using dracut\u0027s NetworkManager-based initrd network module. These options are improperly handled and written into a temporary shell script without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs during system boot.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "dracut: dracut: Root code execution via DHCP options command injection in NetworkManager initrd module",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important vulnerability in dracut\u0027s NetworkManager-based initrd network module (nm-run.sh) that allows command injection via crafted DHCP options. An attacker on the adjacent network can exploit this by acting as a DHCP server and providing specially crafted DHCP options, leading to root code execution within the initramfs. This affects systems configured to boot using dracut\u0027s network-manager module with a DHCP-derived netroot (for example, NFS-root configurations).",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s 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:dracut-main@aarch64",
          "Red Hat Hardened Images:dracut-main@src",
          "Red Hat Hardened Images:dracut-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-16445"
        },
        {
          "category": "external",
          "summary": "RHBZ#2503147",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503147"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-16445",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-16445"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-16445",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16445"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:26534",
          "url": "https://access.redhat.com/errata/RHSA-2026:26534"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2459963",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459963"
        },
        {
          "category": "external",
          "summary": "https://github.com/dracutdevs/dracut/commit/e509c638e6",
          "url": "https://github.com/dracutdevs/dracut/commit/e509c638e6"
        }
      ],
      "release_date": "2026-07-21T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-16T05:07:44+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:dracut-main@aarch64",
            "Red Hat Hardened Images:dracut-main@src",
            "Red Hat Hardened Images:dracut-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:40700"
        },
        {
          "category": "workaround",
          "details": "Avoid using the root=dhcp/netroot=dhcp/root=dhcp6/netroot=dhcp6 kernel command-line options \u2014 these cause dracut to trust the DHCP server\u0027s root-path option to determine the boot target. Configuring the netroot target explicitly on the kernel/PXE command line instead (e.g. netroot=nfs:\u003cserver\u003e:\u003cpath\u003e or netroot=iscsi:... with a literal value).",
          "product_ids": [
            "Red Hat Hardened Images:dracut-main@aarch64",
            "Red Hat Hardened Images:dracut-main@src",
            "Red Hat Hardened Images:dracut-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:dracut-main@aarch64",
            "Red Hat Hardened Images:dracut-main@src",
            "Red Hat Hardened Images:dracut-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "dracut: dracut: Root code execution via DHCP options command injection in NetworkManager initrd module"
    }
  ]
}