CVE-2022-49811

Estado: AnalizadaAlta (7.8)—

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

drbd: use after free in drbd_create_device()

The drbd_destroy_connection() frees the "connection" so use the _safe() iterator to prevent a use after free.

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: 0.23%
Percentil entre todas las CVEs puntuadas: 12
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 Interpreterexecution75 %
Impacto secundarioT1499.004 Application or System Exploitationimpact60 %

CWE-416 (use-after-free) en kernel Linux con AV:L/PR:L permite escalada de privilegios local. Ejecución de código arbitrario (T1059) por corrupción de memoria; potencial DoS por crash del kernel.

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 Filter Network Traffic

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-49811",
  "cveTags": [],
  "metrics": {
    "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
      }
    ]
  },
  "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": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "fc1897f16ebcfd22364f2afcc27f53a740f3bc7a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "9ed51414aef6e59e832e2960f10766dce2d5b1a1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "7d93417d596402ddd46bd76c721f205d09d0d025",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "c2a00b149836d60c222930bbea6b2139caf34d4f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b6f85ef9538b2111a8ba0bbfae9aaebabfc94961",
              "lessThan": "a7a1598189228b5007369a9622ccdf587be0730f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/block/drbd/drbd_main.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.14.300",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.267",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.225",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.156",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.80",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/block/drbd/drbd_main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-05-01T15:16:04.450",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/7d93417d596402ddd46bd76c721f205d09d0d025",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9ed51414aef6e59e832e2960f10766dce2d5b1a1",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a7a1598189228b5007369a9622ccdf587be0730f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c2a00b149836d60c222930bbea6b2139caf34d4f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fc1897f16ebcfd22364f2afcc27f53a740f3bc7a",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrbd: use after free in drbd_create_device()\n\nThe drbd_destroy_connection() frees the \"connection\" so use the _safe()\niterator to prevent a use after free."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drbd: use-after-free en drbd_create_device(). drbd_destroy_connection() libera la \"conexión\", así que use el iterador _safe() para evitar un use-after-free."
    }
  ],
  "lastModified": "2026-06-17T05:19:12.377",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F6F827EE-F903-48B4-A687-22369CFDAC96",
              "versionEndExcluding": "4.14.300",
              "versionStartIncluding": "3.15"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5C69A12-68E2-400E-9A5A-375A673C8402",
              "versionEndExcluding": "4.19.267",
              "versionStartIncluding": "4.15"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "94D21814-3051-4860-AB06-C7880A3D4933",
              "versionEndExcluding": "5.4.225",
              "versionStartIncluding": "4.20"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E2152F3D-E6D3-405D-B0BE-911B8B6E2EE6",
              "versionEndExcluding": "5.10.156",
              "versionStartIncluding": "5.5"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "51BBEF3B-79F5-4D4C-ADBA-F34DA0E2465C",
              "versionEndExcluding": "5.15.80",
              "versionStartIncluding": "5.11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "64F9ADD1-3ADB-4D66-A00F-4A83010B05F0",
              "versionEndExcluding": "6.0.10",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}