nvd-json-data-feeds/CVE-2022/CVE-2022-488xx/CVE-2022-48894.json

{
  "id": "CVE-2022-48894",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-08-21T07:15:05.527",
  "lastModified": "2024-09-11T15:58:04.533",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu-v3: Don't unregister on shutdown\n\nSimilar to SMMUv2, this driver calls iommu_device_unregister() from the\nshutdown path, which removes the IOMMU groups with no coordination\nwhatsoever with their users - shutdown methods are optional in device\ndrivers. This can lead to NULL pointer dereferences in those drivers'\nDMA API calls, or worse.\n\nInstead of calling the full arm_smmu_device_remove() from\narm_smmu_device_shutdown(), let's pick only the relevant function call -\narm_smmu_device_disable() - more or less the reverse of\narm_smmu_device_reset() - and call just that from the shutdown path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/arm-smmu-v3: no cancelar el registro al apagar. Similar a SMMUv2, este controlador llama a iommu_device_unregister() desde la ruta de apagado, lo que elimina los grupos IOMMU sin coordinaci\u00f3n alguna. con sus usuarios: los m\u00e9todos de apagado son opcionales en los controladores de dispositivos. Esto puede provocar desreferencias de puntero NULL en las llamadas API DMA de esos controladores, o algo peor. En lugar de llamar al arm_smmu_device_remove() completo desde arm_smmu_device_shutdown(), seleccionemos solo la llamada a la funci\u00f3n relevante - arm_smmu_device_disable() - m\u00e1s o menos lo inverso de arm_smmu_device_reset() - y llamemos solo eso desde la ruta de apagado."
    }
  ],
  "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",
          "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
      }
    ]
  },
  "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:*:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/32ea2c57dc216b6ad8125fa680d31daa5d421c95",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/ead3e6c79479890444c777fd329afc125fecde48",
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}