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This flaw affects Linux kernel versions prior to 5.14-rc7."},{"lang":"es","value":"Se ha encontrado un fallo en el código AMD de KVM para soportar la virtualización anidada SVM. El fallo se produce cuando se procesa el VMCB (bloque de control de la máquina virtual) proporcionado por el huésped L1 para generar/manejar un huésped anidado (L2). Debido a que no se comprueba correctamente el campo \"int_ctl\", este problema podría permitir a un L1 malicioso habilitar el soporte AVIC (Advanced Virtual Interrupt Controller) para el huésped L2. Como resultado, el invitado L2 podría leer/escribir páginas físicas del anfitrión, resultando en un bloqueo de todo el sistema, un filtrado de datos confidenciales o un posible escape del invitado al anfitrión. Este fallo afecta a las versiones del kernel de Linux anteriores a 5.14-rc7"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.0,"impactScore":6.0}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:C","baseScore":6.1,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":3.9,"impactScore":8.5,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-862"}]},{"source":"nvd@nist.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-862"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.4.282","matchCriteriaId":"6C604847-F398-40D1-AB26-04FAED3AF5D9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"4.9.281","matchCriteriaId":"286C2303-8862-4B89-BF52-0EB83C7C067C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.245","matchCriteriaId":"05DE70B5-762A-4042-8465-8690F02688FA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.205","matchCriteriaId":"5DFB089B-C0CD-422B-9182-497E5451AD10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.142","matchCriteriaId":"BABFD545-0405-4B3C-89BF-B7B0A9A5DCDF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.60","matchCriteriaId":"58120FFF-3B1B-4287-A7D3-657641443823"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.13.12","matchCriteriaId":"C31610D4-4A14-453C-8ECC-AFF86AC4D24D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*","matchCriteriaId":"71268287-21A8-4488-AA4F-23C473153131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*","matchCriteriaId":"23B9E5C6-FAB5-4A02-9E39-27C8787B0991"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*","matchCriteriaId":"D185CF67-7E4A-4154-93DB-CE379C67DB56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*","matchCriteriaId":"D1DA0AF6-02F4-47C7-A318-8C006ED0C665"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*","matchCriteriaId":"49DD30B1-8C99-4C38-A66B-CAB3827BEE8A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*","matchCriteriaId":"15013998-4AF0-4CDC-AB13-829ECD8A8E66"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","matchCriteriaId":"142AD0DD-4CF3-4D74-9442-459CE3347E3A"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"DEECE5FC-CACF-4496-A3E7-164736409252"}]}]}],"references":[{"url":"http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html","source":"secalert@redhat.com","tags":["Exploit","Third 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