CVE-2023-46838

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While not really useful, except for the initial part\nany of them may be of zero length, i.e. carry no data at all. Besides a\ncertain initial portion of the to be transferred data, these parts are\ndirectly translated into what Linux calls SKB fragments. Such converted\nrequest parts can, when for a particular SKB they are all of length\nzero, lead to a de-reference of NULL in core networking code."}, {"lang": "es", "value": "Las solicitudes de transmisi\u00f3n en el protocolo de red virtual de Xen pueden constar de varias partes. Si bien no es realmente \u00fatil, excepto la parte inicial, cualquiera de ellos puede tener una longitud cero, es decir, no contener ning\u00fan dato. Adem\u00e1s de una cierta porci\u00f3n inicial de los datos a transferir, estas partes se traducen directamente en lo que Linux llama fragmentos SKB. Estas partes de solicitud convertidas pueden, cuando para un SKB en particular todas tienen longitud cero, provocar una desreferencia de NULL en el c\u00f3digo de red central."}], "id": "CVE-2023-46838", "lastModified": "2026-06-17T06:31:43.883", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "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:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "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:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-46838", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-06-02T19:06:43.742416Z", "version": "2.0.3"}}]}, "published": "2024-01-29T11:15:07.933", "references": [{"source": "security@xen.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"}, {"source": "security@xen.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}, {"source": "security@xen.org", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGEKT4DKSDXDS34EL7M4UVJMMPH7Z3ZZ/"}, {"source": "security@xen.org", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/"}, {"source": "security@xen.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://xenbits.xenproject.org/xsa/advisory-448.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://xenbits.xen.org/xsa/advisory-448.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGEKT4DKSDXDS34EL7M4UVJMMPH7Z3ZZ/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://xenbits.xenproject.org/xsa/advisory-448.html"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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