CVE-2025-24934

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "modules": ["netinet"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"lessThan": "p1", "status": "affected", "version": "15.0-BETA2", "versionType": "beta"}, {"lessThan": "p5", "status": "affected", "version": "14.3-RELEASE", "versionType": "release"}, {"lessThan": "p6", "status": "affected", "version": "13.5-RELEASE", "versionType": "release"}]}], "source": "secteam@freebsd.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Software which sets SO_REUSEPORT_LB on a socket and then connects it to a host will not directly observe any problems. However, due to its membership in a load-balancing group, that socket will receive packets originating from any host. This breaks the contract of the connect(2) and implied connect via sendto(2), and may leave the application vulnerable to spoofing attacks.\n\n\n\n\nThe kernel failed to check the connection state of sockets when adding them to load-balancing groups. Furthermore, when looking up the destination socket for an incoming packet, the kernel will match a socket belonging to a load-balancing group even if it is connected, in violation of the contract that connected sockets\u00a0are only supposed to receive packets originating from the connected host."}, {"lang": "es", "value": "El software que establece SO_REUSEPORT_LB en un socket y luego lo conecta a un host no observar\u00e1 directamente ning\u00fan problema. Sin embargo, debido a su pertenencia a un grupo de equilibrio de carga, ese socket recibir\u00e1 paquetes originados desde cualquier host. Esto rompe el contrato de connect(2) y la conexi\u00f3n impl\u00edcita a trav\u00e9s de sendto(2), y puede dejar la aplicaci\u00f3n vulnerable a ataques de suplantaci\u00f3n de identidad.\n\nEl kernel no verific\u00f3 el estado de conexi\u00f3n de los sockets al a\u00f1adirlos a grupos de equilibrio de carga. Adem\u00e1s, al buscar el socket de destino para un paquete entrante, el kernel har\u00e1 coincidir un socket perteneciente a un grupo de equilibrio de carga incluso si est\u00e1 conectado, en violaci\u00f3n del contrato de que los sockets conectados solo deben recibir paquetes originados desde el host conectado."}], "id": "CVE-2025-24934", "lastModified": "2026-10-19T16:10:00.260", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-24934", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-22T19:58:47.874750Z", "version": "2.0.3"}}]}, "published": "2025-10-22T18:15:34.013", "references": [{"source": "secteam@freebsd.org", "url": "https://security.freebsd.org/advisories/FreeBSD-SA-25:09.netinet.asc"}, {"source": "secteam@freebsd.org", "url": "https://www.usenix.org/system/files/conference/usenixsecurity26/sec26_prepub_ben-simhon.pdf"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-488"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

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{"created": "2025-10-23T09:58:43.599862+00:00", "updated": "2026-05-01T06:15:10.600673+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}