CVE-2022-50384

Estado: ModificadaAlta (7.8)—

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

staging: vme_user: Fix possible UAF in tsi148_dma_list_add

Smatch report warning as follows:

In tsi148_dma_list_add(), the error path "goto err_dma" will not remove entry->list from list->entries, but entry will be freed, then list traversal may cause UAF.

Fix by removeing it from list->entries before free().

Detalles técnicos trazas, registros y código del informe original

drivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn:
  '&entry->list' not removed from list

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.17%
Percentil entre todas las CVEs puntuadas: 5
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution70 %

Acceso local (AV:L) con privilegios (PR:L) sin interacción; UAF en kernel permite ejecución de código arbitrario con máximos privilegios (C:H/I:H/A:H) tras escalada.

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

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416
CWE-416

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-50384",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-50384",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-14T18:48:36.418605Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "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": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "5cc4eea715a3fcf4e516662f736dfee63979465f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "51c0ad3b7c5b01f9314758335a13f157b05fa56d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "e6b0adff99edf246ba1f8d464530a0438cb1cbda",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "a45ba33d398a821147d7e5f16ead7eb125e331e2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "5d2b286eb034af114f67d9967fc3fbc1829bb712",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "1f5661388f43df3ac106ce93e67d8d22b16a78ff",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "cf138759a7e92c75cfc1b7ba705e4108fe330edf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "85db68fc901da52314ded80aace99f8b684c7815",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2383c90a9d691201b9aee557776694cde86a935",
              "lessThan": "357057ee55d3c99a5de5abe8150f7bca04f8e53b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/staging/vme_user/vme_tsi148.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/staging/vme_user/vme_tsi148.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-09-18T14:15:37.230",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1f5661388f43df3ac106ce93e67d8d22b16a78ff",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/357057ee55d3c99a5de5abe8150f7bca04f8e53b",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/51c0ad3b7c5b01f9314758335a13f157b05fa56d",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5cc4eea715a3fcf4e516662f736dfee63979465f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5d2b286eb034af114f67d9967fc3fbc1829bb712",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/85db68fc901da52314ded80aace99f8b684c7815",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a45ba33d398a821147d7e5f16ead7eb125e331e2",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cf138759a7e92c75cfc1b7ba705e4108fe330edf",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e6b0adff99edf246ba1f8d464530a0438cb1cbda",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: vme_user: Fix possible UAF in tsi148_dma_list_add\n\nSmatch report warning as follows:\n\ndrivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn:\n  '&entry->list' not removed from list\n\nIn tsi148_dma_list_add(), the error path \"goto err_dma\" will not\nremove entry->list from list->entries, but entry will be freed,\nthen list traversal may cause UAF.\n\nFix by removeing it from list->entries before free()."
    }
  ],
  "lastModified": "2026-06-17T05:23:23.900",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "68CE101F-4861-4688-AA06-B428C2B72757",
              "versionEndExcluding": "4.9.337",
              "versionStartIncluding": "4.2"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1E7450AD-4739-46F0-B81B-C02E7B35A97B",
              "versionEndExcluding": "4.14.303",
              "versionStartIncluding": "4.10"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AE8904A3-99BE-4E49-9682-1F90A6373F4F",
              "versionEndExcluding": "4.19.270",
              "versionStartIncluding": "4.15"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A0C0D95E-414A-445E-941B-3EF6A4D3A093",
              "versionEndExcluding": "5.4.229",
              "versionStartIncluding": "4.20"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D05D31FC-BD74-4F9E-B1D8-9CED62BE6F65",
              "versionEndExcluding": "5.10.163",
              "versionStartIncluding": "5.5"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "47237296-55D1-4ED4-8075-D00FC85A61EE",
              "versionEndExcluding": "5.15.86",
              "versionStartIncluding": "5.11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C720A569-3D93-4D77-95F6-E2B3A3267D9F",
              "versionEndExcluding": "6.0.16",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "77239F4B-6BB2-4B9E-A654-36A52396116C",
              "versionEndExcluding": "6.1.2",
              "versionStartIncluding": "6.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}