{
  "id": "CVE-2024-49874",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-10-21T18:15:08.983",
  "lastModified": "2024-10-24T20:27:51.700",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition\n\nIn the svc_i3c_master_probe function, &master->hj_work is bound with\nsvc_i3c_master_hj_work, &master->ibi_work is bound with\nsvc_i3c_master_ibi_work. And svc_i3c_master_ibi_work  can start the\nhj_work, svc_i3c_master_irq_handler can start the ibi_work.\n\nIf we remove the module which will call svc_i3c_master_remove to\nmake cleanup, it will free master->base through i3c_master_unregister\nwhile the work mentioned above will be used. The sequence of operations\nthat may lead to a UAF bug is as follows:\n\nCPU0                                         CPU1\n\n                                    | svc_i3c_master_hj_work\nsvc_i3c_master_remove               |\ni3c_master_unregister(&master->base)|\ndevice_unregister(&master->dev)     |\ndevice_release                      |\n//free master->base                 |\n                                    | i3c_master_do_daa(&master->base)\n                                    | //use master->base\n\nFix it by ensuring that the work is canceled before proceeding with the\ncleanup in svc_i3c_master_remove."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i3c: master: svc: Se corrige la vulnerabilidad de use after free en el controlador svc_i3c_master debido a la condici\u00f3n de ejecuci\u00f3n En la funci\u00f3n svc_i3c_master_probe, &master->hj_work est\u00e1 vinculado con svc_i3c_master_hj_work, &master->ibi_work est\u00e1 vinculado con svc_i3c_master_ibi_work. Y svc_i3c_master_ibi_work puede iniciar hj_work, svc_i3c_master_irq_handler puede iniciar ibi_work. Si eliminamos el m\u00f3dulo que llamar\u00e1 a svc_i3c_master_remove para realizar la limpieza, liberar\u00e1 master->base a trav\u00e9s de i3c_master_unregister mientras que el trabajo mencionado anteriormente se utilizar\u00e1. La secuencia de operaciones que pueden provocar un error de UAF es la siguiente: CPU0 CPU1 | Solucione el problema asegur\u00e1ndose de que el trabajo se cancele antes de continuar con la limpieza en svc_i3c_master_remove."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
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          "negate": false,
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      "url": "https://git.kernel.org/stable/c/27b55724d3f781dd6e635e89dc6e2fd78fa81a00",
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