{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-47143",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-47143"
  ],
  "published": "2025-01-11T12:27:13Z",
  "summary": "dma-debug: fix a possible deadlock on radix_lock",
  "details": "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().",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.120",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-47143"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ccce34a5c3f5c9541108a451657ade621524b32"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/efe1b9bbf356357fdff0399af361133d6e3ba18e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8c1b4fea8d62285f5e1a8194889b39661608bd8a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c212d91070beca0d03fef7bf988baf4ff4b3eee4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f2b95248a16c5186d1c658fc0aeb2f3bd95e5259"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7543c3e3b9b88212fcd0aaf5cab5588797bdc7de"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}