{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T12:17:17.271","vulnerabilities":[{"cve":{"id":"CVE-2024-53211","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-12-27T14:15:29.017","lastModified":"2025-10-08T14:02:23.470","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/l2tp: fix warning in l2tp_exit_net found by syzbot\n\nIn l2tp's net exit handler, we check that an IDR is empty before\ndestroying it:\n\n\tWARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr));\n\tidr_destroy(&pn->l2tp_tunnel_idr);\n\nBy forcing memory allocation failures in idr_alloc_32, syzbot is able\nto provoke a condition where idr_is_empty returns false despite there\nbeing no items in the IDR. This turns out to be because the radix tree\nof the IDR contains only internal radix-tree nodes and it is this that\ncauses idr_is_empty to return false. The internal nodes are cleaned by\nidr_destroy.\n\nUse idr_for_each to check that the IDR is empty instead of\nidr_is_empty to avoid the problem."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/l2tp: corrección de advertencia en l2tp_exit_net encontrada por syzbot En el controlador de salida de red de l2tp, verificamos que un IDR esté vacío antes de destruirlo: WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr)); idr_destroy(&pn->l2tp_tunnel_idr); Al forzar fallas de asignación de memoria en idr_alloc_32, syzbot puede provocar una condición donde idr_is_empty devuelve falso a pesar de que no haya elementos en el IDR. Esto resulta ser porque el árbol de radix del IDR contiene solo nodos de árbol de radix internos y es esto lo que hace que idr_is_empty devuelva falso. Los nodos internos son limpiados por idr_destroy. Utilice idr_for_each para verificar que el IDR esté vacío en lugar de idr_is_empty para evitar el problema."}],"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:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.12.2","matchCriteriaId":"D8882B1B-2ABC-4838-AC1D-DBDBB5764776"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/5d066766c5f1252f98ff859265bcd1a5b52ac46c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a487cc8986d6dd75b60b59004f3bd2ea9b4dd541","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}