nvd-json-data-feeds/CVE-2023/CVE-2023-42xx/CVE-2023-4206.json

{
  "id": "CVE-2023-4206",
  "sourceIdentifier": "cve-coordination@google.com",
  "published": "2023-09-06T14:15:11.280",
  "lastModified": "2024-02-15T15:57:06.697",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to achieve local privilege escalation.\n\nWhen route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.\n\nWe recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.\n\n"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de use-after-free en el componente net/sched: cls_route del kernel de Linux se puede explotar para lograr una escalada de privilegios local. Cuando se llama a route4_change() en un filtro existente, toda la estructura tcf_result siempre se copia en la nueva instancia del filtro. Esto causa un problema al actualizar un filtro vinculado a una clase, ya que siempre se llama a tcf_unbind_filter() en la instancia anterior en la ruta exitosa, lo que disminuye filter_cnt de la clase a la que todav\u00eda se hace referencia y permite que se elimine, lo que lleva a un use-after-free. Recomendamos actualizar al commit anterior b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8."
    }
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          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
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      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8",
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