nvd-json-data-feeds/CVE-2022/CVE-2022-488xx/CVE-2022-48870.json

{
  "id": "CVE-2022-48870",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-08-21T07:15:04.143",
  "lastModified": "2024-09-06T14:20:52.290",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: fix possible null-ptr-defer in spk_ttyio_release\n\nRun the following tests on the qemu platform:\n\nsyzkaller:~# modprobe speakup_audptr\n input: Speakup as /devices/virtual/input/input4\n initialized device: /dev/synth, node (MAJOR 10, MINOR 125)\n speakup 3.1.6: initialized\n synth name on entry is: (null)\n synth probe\n\nspk_ttyio_initialise_ldisc failed because tty_kopen_exclusive returned\nfailed (errno -16), then remove the module, we will get a null-ptr-defer\nproblem, as follow:\n\nsyzkaller:~# modprobe -r speakup_audptr\n releasing synth audptr\n BUG: kernel NULL pointer dereference, address: 0000000000000080\n #PF: supervisor write access in kernel mode\n #PF: error_code(0x0002) - not-present page\n PGD 0 P4D 0\n Oops: 0002 [#1] PREEMPT SMP PTI\n CPU: 2 PID: 204 Comm: modprobe Not tainted 6.1.0-rc6-dirty #1\n RIP: 0010:mutex_lock+0x14/0x30\n Call Trace:\n <TASK>\n  spk_ttyio_release+0x19/0x70 [speakup]\n  synth_release.part.6+0xac/0xc0 [speakup]\n  synth_remove+0x56/0x60 [speakup]\n  __x64_sys_delete_module+0x156/0x250\n  ? fpregs_assert_state_consistent+0x1d/0x50\n  do_syscall_64+0x37/0x90\n  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n </TASK>\n Modules linked in: speakup_audptr(-) speakup\n Dumping ftrace buffer:\n\nin_synth->dev was not initialized during modprobe, so we add check\nfor in_synth->dev to fix this bug."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: corrige posible null-ptr-defer en spk_ttyio_release Ejecute las siguientes pruebas en la plataforma qemu: syzkaller:~# modprobe Speakup_audptr input: Speakup as /devices/virtual/input/input4 dispositivo inicializado: /dev/synth, nodo (MAJOR 10, MINOR 125) Speakup 3.1.6: el nombre del sintetizador inicializado en la entrada es: (nulo) la sonda de sintetizador spk_ttyio_initialise_ldisc fall\u00f3 porque tty_kopen_exclusive devolvi\u00f3 un error (errno -16), luego elimine el m\u00f3dulo, obtendremos un problema de aplazamiento de ptr nulo, como sigue: syzkaller:~# modprobe -r Speakup_audptr liberando sintetizador audptr ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000080 #PF: acceso de escritura del supervisor en modo kernel #PF: c\u00f3digo_error(0x0002 ) - p\u00e1gina no presente PGD 0 P4D 0 Ups: 0002 [#1] PREEMPT SMP PTI CPU: 2 PID: 204 Comm: modprobe No contaminado 6.1.0-rc6-dirty #1 RIP: 0010:mutex_lock+0x14/0x30 Llamada Seguimiento:  spk_ttyio_release+0x19/0x70 [speakup] synth_release.part.6+0xac/0xc0 [speakup] synth_remove+0x56/0x60 [speakup] __x64_sys_delete_module+0x156/0x250? fpregs_assert_state_consistent+0x1d/0x50 do_syscall_64+0x37/0x90 entry_syscall_64_after_hwframe+0x63/0xcd  m\u00f3dulos vinculados en: sheakup_audptr (-) volcando ftrace b\u00fafer: in_synth-&gt;&gt; nth-&gt; dev para corregir este error."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "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",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.12",
              "versionEndExcluding": "5.15.90",
              "matchCriteriaId": "82544A71-562D-4C2F-B75E-7193C3B97CD0"
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2da67bff29ab49caafb0766e8b8383b735ff796f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/5abbeebd8296c2301023b8dc4b5a6c0d5229b4f5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}