CVE-2026-58374

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "hostapd", "vendor": "w1.fi", "versions": [{"lessThan": "2.12", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*", "matchCriteriaId": "2634D924-B17C-47D4-B6DE-F69736D79E54", "versionEndIncluding": "2.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile subelement. In hostapd_process_ml_assoc_req() in src/ap/ieee802_11_eht.c, the received link_id field can be parsed as value 15, but the corresponding links[] storage only has valid entries for lower link IDs (0 through 14). This causes an out-of-bounds write / small memory corruption during association processing before the 4-way handshake. The attack does not require network credentials, prior authentication, or user interaction. The confirmed practical impact is denial of service through hostapd process termination. This affects hostapd v2.11 and newer development snapshots before v2.12 when built with CONFIG_IEEE80211BE enabled. The issue is fixed in hostapd v2.12 and the upstream 2026-1 fixes."}, {"lang": "es", "value": "En hostapd anterior a 2.12, una comprobaci\u00f3n de l\u00edmites faltante en el procesamiento de solicitudes de asociaci\u00f3n de Operaci\u00f3n Multi-Enlace (MLO) de Wi-Fi 7 (IEEE 802.11be) en modo AP permite a un atacante no autenticado dentro del alcance inal\u00e1mbrico enviar una trama de gesti\u00f3n manipulada que contiene un elemento Multi-Enlace o subelemento de Perfil por STA malformado. En hostapd_process_ml_assoc_req() en src/ap/ieee802_11_eht.c, el campo link_id recibido puede ser analizado como valor 15, pero el almacenamiento links[] correspondiente solo tiene entradas v\u00e1lidas para IDs de enlace inferiores (0 a 14). Esto causa una escritura fuera de l\u00edmites / peque\u00f1a corrupci\u00f3n de memoria durante el procesamiento de asociaci\u00f3n antes del handshake de 4 v\u00edas. El ataque no requiere credenciales de red, autenticaci\u00f3n previa o interacci\u00f3n del usuario. El impacto pr\u00e1ctico confirmado es denegaci\u00f3n de servicio a trav\u00e9s de la terminaci\u00f3n del proceso hostapd. Esto afecta a hostapd v2.11 y a las instant\u00e1neas de desarrollo m\u00e1s recientes anteriores a v2.12 cuando se compila con CONFIG_IEEE80211BE habilitado. El problema est\u00e1 solucionado en hostapd v2.12 y las correcciones upstream 2026-1."}], "id": "CVE-2026-58374", "lastModified": "2026-10-25T21:10:00.770", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "cve@mitre.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-58374", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-30T13:38:17.879838Z", "version": "2.0.3"}}]}, "published": "2026-06-30T13:19:18.960", "references": [{"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://git.w1.fi/cgit/hostap/commit/?id=46dd5a4ffc9bcf44cf8fc45120b3e1e5ec922187"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://git.w1.fi/cgit/hostap/commit/?id=aa9d345887389a251c63a3781d2ad2940d079193"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking"], "url": "https://w1.fi/security/2026-1/"}, {"source": "cve@mitre.org", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://w1.fi/security/2026-1/missing-ml-parsing-validation.txt"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Mitigation", "Patch"], "url": "https://www.openwall.com/lists/oss-security/2026/06/30/1"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-193"}], "source": "cve@mitre.org", "type": "Secondary"}]}

{"bugzilla": {"description": "hostapd: hostapd: Denial of Service via malformed Wi-Fi 7 Multi-Link Operation association request", "id": "2494924", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2494924"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile subelement. In hostapd_process_ml_assoc_req() in src/ap/ieee802_11_eht.c, the received link_id field can be parsed as value 15, but the corresponding links[] storage only has valid entries for lower link IDs (0 through 14). This causes an out-of-bounds write / small memory corruption during association processing before the 4-way handshake. The attack does not require network credentials, prior authentication, or user interaction. The confirmed practical impact is denial of service through hostapd process termination. This affects hostapd v2.11 and newer development snapshots before v2.12 when built with CONFIG_IEEE80211BE enabled. The issue is fixed in hostapd v2.12 and the upstream 2026-1 fixes.", "A flaw was found in hostapd. An unauthenticated attacker within wireless range can send a specially crafted management frame during Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing. This crafted frame, containing a malformed Multi-Link Element or Per-STA Profile subelement, can lead to an out-of-bounds write and memory corruption. The primary consequence of this vulnerability is a denial of service (DoS) due to the termination of the hostapd process."], "name": "CVE-2026-58374", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "hostapd", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "hostapd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "hostapd", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-30T12:35:54Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-58374\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-58374\nhttps://git.w1.fi/cgit/hostap/commit/?id=46dd5a4ffc9bcf44cf8fc45120b3e1e5ec922187\nhttps://git.w1.fi/cgit/hostap/commit/?id=aa9d345887389a251c63a3781d2ad2940d079193\nhttps://w1.fi/security/2026-1/\nhttps://w1.fi/security/2026-1/missing-ml-parsing-validation.txt\nhttps://www.openwall.com/lists/oss-security/2026/06/30/1"], "threat_severity": "Moderate"}

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