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CVE-2022-50785

Estado: AplazadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

fsi: occ: Prevent use after free

Use get_device and put_device in the open and close functions to make sure the device doesn't get freed while a file descriptor is open. Also, lock around the freeing of the device buffer and check the buffer before using it in the submit function.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:L/PR:L sin UI indica escalada local; use-after-free en driver FSI/OCC permite DoS o corrupción de memoria con acceso local privilegiado.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50785",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "008d3825a805557464c5e75f9eb806a3aa2f5e6d",
              "lessThan": "1d5ad0a874ddfcee9f932f54b1d34cbe8b9ddcfe",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "008d3825a805557464c5e75f9eb806a3aa2f5e6d",
              "lessThan": "3593e8efc9f0dac6be70bd5c964eadaa86bf2713",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "008d3825a805557464c5e75f9eb806a3aa2f5e6d",
              "lessThan": "d3e1e24604031b0d83b6c2d38f54eeea265cfcc0",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/fsi/fsi-occ.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/fsi/fsi-occ.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T12:15:44.143",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1d5ad0a874ddfcee9f932f54b1d34cbe8b9ddcfe",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3593e8efc9f0dac6be70bd5c964eadaa86bf2713",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d3e1e24604031b0d83b6c2d38f54eeea265cfcc0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsi: occ: Prevent use after free\n\nUse get_device and put_device in the open and close functions to\nmake sure the device doesn't get freed while a file descriptor is\nopen.\nAlso, lock around the freeing of the device buffer and check the\nbuffer before using it in the submit function."
    }
  ],
  "lastModified": "2026-08-04T10:18:24.200",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}