CVE-2024-50094

{"id": "CVE-2024-50094", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-11-05T17:15:06.733", "references": [{"url": "https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: Don't invoke xdp_do_flush() from netpoll.\n\nYury reported a crash in the sfc driver originated from\nnetpoll_send_udp(). The netconsole sends a message and then netpoll\ninvokes the driver's NAPI function with a budget of zero. It is\ndedicated to allow driver to free TX resources, that it may have used\nwhile sending the packet.\n\nIn the netpoll case the driver invokes xdp_do_flush() unconditionally,\nleading to crash because bpf_net_context was never assigned.\n\nInvoke xdp_do_flush() only if budget is not zero."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sfc: No invoque xdp_do_flush() desde netpoll. Yury inform\u00f3 de un fallo en el controlador sfc originado desde netpoll_send_udp(). La netconsole env\u00eda un mensaje y luego netpoll invoca la funci\u00f3n NAPI del controlador con un presupuesto de cero. Est\u00e1 dedicada a permitir que el controlador libere recursos TX, que puede haber usado al enviar el paquete. En el caso de netpoll, el controlador invoca xdp_do_flush() incondicionalmente, lo que provoca un fallo porque bpf_net_context nunca se asign\u00f3. Invoque xdp_do_flush() solo si el presupuesto no es cero."}], "lastModified": "2024-11-13T00:42:02.983", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "66F99BD9-E74F-4CC8-834E-B73BD4643C7B", "versionEndExcluding": "6.11.4", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}