{
  "id": "CVE-2021-47456",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-05-22T07:15:10.627",
  "lastModified": "2024-11-21T06:36:10.987",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_pci: peak_pci_remove(): fix UAF\n\nWhen remove the module peek_pci, referencing 'chan' again after\nreleasing 'dev' will cause UAF.\n\nFix this by releasing 'dev' later.\n\nThe following log reveals it:\n\n[   35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537\n[   35.965513 ] Call Trace:\n[   35.965718 ]  dump_stack_lvl+0xa8/0xd1\n[   35.966028 ]  print_address_description+0x87/0x3b0\n[   35.966420 ]  kasan_report+0x172/0x1c0\n[   35.966725 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.967137 ]  ? trace_irq_enable_rcuidle+0x10/0x170\n[   35.967529 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.967945 ]  __asan_report_load8_noabort+0x14/0x20\n[   35.968346 ]  peak_pci_remove+0x16f/0x270 [peak_pci]\n[   35.968752 ]  pci_device_remove+0xa9/0x250"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: pico_pci: pico_pci_remove(): arreglar UAF Cuando se elimina el m\u00f3dulo peek_pci, hacer referencia a 'chan' nuevamente despu\u00e9s de liberar 'dev' causar\u00e1 UAF. Solucione este problema lanzando 'dev' m\u00e1s tarde. El siguiente registro lo revela: [35.961814] ERROR: KASAN: uso despu\u00e9s de liberar en pico_pci_remove+0x16f/0x270 [peak_pci] [35.963414] Lectura de tama\u00f1o 8 en addr ffff888136998ee8 por tarea modprobe/5537 [35.965513] Seguimiento de llamadas: [3 5.965718 ] dump_stack_lvl+0xa8/0xd1 [35.966028] print_address_description+0x87/0x3b0 [35.966420] kasan_report+0x172/0x1c0 [35.966725]? pico_pci_remove+0x16f/0x270 [pico_pci] [35.967137]? trace_irq_enable_rcuidle+0x10/0x170 [35.967529]? pico_pci_remove+0x16f/0x270 [pico_pci] [ 35.967945 ] __asan_report_load8_noabort+0x14/0x20 [ 35.968346 ] pico_pci_remove+0x16f/0x270 [pico_pci] [ 35.968752 ] ve+0xa9/0x250"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        },
        {
          "lang": "en",
          "value": "CWE-467"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640d2d464d",
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