{
  "id": "CVE-2024-47143",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-01-11T13:15:22.007",
  "lastModified": "2025-02-03T15:15:56.463",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndma-debug: fix a possible deadlock on radix_lock\n\nradix_lock() shouldn't be held while holding dma_hash_entry[idx].lock\notherwise, there's a possible deadlock scenario when\ndma debug API is called holding rq_lock():\n\nCPU0                   CPU1                       CPU2\ndma_free_attrs()\ncheck_unmap()          add_dma_entry()            __schedule() //out\n                                                  (A) rq_lock()\nget_hash_bucket()\n(A) dma_entry_hash\n                                                  check_sync()\n                       (A) radix_lock()           (W) dma_entry_hash\ndma_entry_free()\n(W) radix_lock()\n                       // CPU2's one\n                       (W) rq_lock()\n\nCPU1 situation can happen when it extending radix tree and\nit tries to wake up kswapd via wake_all_kswapd().\n\nCPU2 situation can happen while perf_event_task_sched_out()\n(i.e. dma sync operation is called while deleting perf_event using\n etm and etr tmc which are Arm Coresight hwtracing driver backends).\n\nTo remove this possible situation, call dma_entry_free() after\nput_hash_bucket() in check_unmap()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dma-debug: corrige un posible bloqueo en radix_lock radix_lock() no se debe mantener mientras se mantiene dma_hash_entry[idx].lock de lo contrario, existe un posible escenario de bloqueo cuando se llama a la API de depuraci\u00f3n de dma manteniendo rq_lock(): CPU0 CPU1 CPU2 dma_free_attrs() check_unmap() add_dma_entry() __schedule() //out (A) rq_lock() get_hash_bucket() (A) dma_entry_hash check_sync() (A) radix_lock() (W) dma_entry_hash dma_entry_free() (W) radix_lock() // El \u00fanico rq_lock() de CPU2 (W) La situaci\u00f3n de CPU1 puede ocurrir cuando extiende el \u00e1rbol de radix e intenta despertar a kswapd a trav\u00e9s de wake_all_kswapd(). La situaci\u00f3n de CPU2 puede ocurrir mientras se ejecuta perf_event_task_sched_out() (es decir, se llama a la operaci\u00f3n de sincronizaci\u00f3n de dma mientras se elimina perf_event usando etm y etr tmc, que son backends del controlador hwtracing de Arm Coresight). Para eliminar esta posible situaci\u00f3n, llame a dma_entry_free() despu\u00e9s de put_hash_bucket() en check_unmap()."
    }
  ],
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    "cvssMetricV31": [
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        "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
      }
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      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
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          "lang": "en",
          "value": "CWE-667"
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