CVE-2026-16445

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"unaffected", "packageName": "dracut", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "unaffected", "packageName": "dracut", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "unaffected", "packageName": "dracut", "product": "Red Hat Enterprise Linux 7", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "unaffected", "packageName": "dracut", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift:5"], "defaultStatus": "unaffected", "packageName": "dracut", "product": "Red Hat OpenShift Container Platform 5", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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's 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."}], "id": "CVE-2026-16445", "lastModified": "2026-11-04T22:18:00.123", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16445", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-22T17:58:44.376796Z", "version": "2.0.3"}}]}, "published": "2026-07-21T13:17:16.730", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:26534"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:40700"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:61252"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:69118"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:69119"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:90272"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-16445"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459963"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503147"}, {"source": "secalert@redhat.com", "url": "https://github.com/dracutdevs/dracut/commit/e509c638e6"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "This issue was discovered by Pavel Valena (Red Hat).", "affected_release": [{"advisory": "RHSA-2026:26534", "cpe": "cpe:/o:redhat:enterprise_linux:8", "impact": "important", "package": "dracut-0:049-244.git20260529.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2026-06-17T00:00:00Z"}], "bugzilla": {"description": "dracut: dracut: Root code execution via DHCP options command injection in NetworkManager initrd module", "id": "2503147", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503147"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-78", "details": ["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's 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."], "mitigation": {"lang": "en:us", "value": "Escape DHCP-derived values (root-path, next-server, dhcp-bootfile) with shell-safe quoting (for example printf '%q') before writing them to the generated dhcpopts file in modules.d/35network-manager/nm-run.sh. This approach is already used in dracut-057 and later, and is already present in the RHEL 8.10.z dracut-049-244.git20260529.el8_10 build."}, "name": "CVE-2026-16445", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "dracut", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "dracut", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "dracut", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "dracut", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "impact": "important", "package_name": "dracut", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "impact": "important", "package_name": "dracut", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-07-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-16445\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-16445\nhttps://access.redhat.com/errata/RHSA-2026:26534\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2459963\nhttps://github.com/dracutdevs/dracut/commit/e509c638e6"], "statement": "This is an Important vulnerability in dracut's 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's network-manager module with a DHCP-derived netroot (for example, NFS-root configurations).", "threat_severity": "Important"}

{"created": "2026-07-24T21:45:02.829607+00:00", "updated": "2026-10-25T18:00:12.905475+00:00", "vendors": []}